Ostomy appliance

ABSTRACT

An ostomy appliance comprising an adaptor having a distal end adapted to be coupled to an ostomy wafer and a proximal end adapted to be coupled to a cap, said distal end having an opening in fluid communication with an opening in said proximal end.

RELATED APPLICATIONS

This application claims the benefit of priority under 35 USC §119(e) ofU.S. Provisional Patent Application No. 61/645,118 filed May 10, 2012,the contents of which are incorporated herein by reference in theirentirety. This application is related to International PatentApplication No. IB2011/051938 filed May 2, 2011.

FIELD AND BACKGROUND OF THE INVENTION

The present invention, in some embodiments thereof, relates to the fieldof surgically created openings for waste removal (stoma) in livingsubjects, and more particularly, to devices and methods for covering astoma as may be used in the case of a colostomy, ileostomy or urostomy.

In performing an ostomy, the physician will generally form the stoma inthe abdominal wall and attach an end or a side of a healthy portion ofthe intestine (large or small intestine, depending on the type ofostomy) to the stoma from the visceral side of the abdominal wall or,alternatively, pass the intestinal portion through the stoma and attachit to the outside of the abdominal wall. The stoma may be permanentlyleft in a patient suffering from a condition for when it is no longerpossible for the intestinal content to pass out via the anus, forexample, due to colon cancer, diverticulitis, trauma, or inflammatorybowel disease, or may be temporary, as may be the case following anoperation on a section of the bowel (small intestine and/or largeintestine) requiring a healing period.

During or following the surgical procedure, an invasive ostomy port maybe temporarily or permanently inserted through the stoma for conductingthe body wastes from the intestine through the stoma. The invasiveostomy port may also serve to prevent the body wastes from coming incontact with the external abdominal wall as they are expelled throughthe stoma. Such an invasive ostomy port, in various embodiments thereof,is described by the Applicant in WO 2011/13872 A2, incorporated hereinby reference in its entirety.

A waste collection bag (also known as “pouch”) is frequently attached tothe invasive ostomy port on the side of the external abdominal wall forcollecting the waste content flowing through the port. The pouch may beof a disposable type or may be reusable following emptying of itscontents.

In some ports, either invasive or non-invasive, a cap is removablyattached to the port for maintaining the port sealed and the wastecontent inside. When required, the user removes the cap and attaches thepouch, replacing the cap following the port having been substantiallyemptied from the accumulated waste content.

Alternatively to the use of the invasive ostomy port and possibly morepopular due to its simplicity and comparatively low cost is thenon-invasive ostomy port such as ostomy wafer (also known as “skinbarrier” or “faceplate”) or ostomy belt. Such a wafer is typically apatch which is placed over the stoma on the external abdominal wall andprotects the skin around the stoma from coming into contact with thewaste content. The wafer typically includes an adhesive on one side forremovably adhering it to the abdominal wall. It generally includes aflange or other pouch attachment element to which a pouch may be eitherremovably or permanently attached. The combination of a wafer with aremovable pouch is generally referred to in the art as an ostomy“two-piece” system whereas that of a wafer with a fixed, non-removablepouch is generally referred to as an ostomy “one-piece” system. Thewafer also includes a wafer port peripherally surrounded by the flangeand in fluid communication with the stoma for allowing waste contentflow from the stoma into the pouch. One requirement of the wafer port isthat it be sized to accommodate a portion of the stoma which mayprotrude from the abdominal wall. Some wafers may be available indifferent sizes and/or may have different sized ports so that a user mayselect a wafer with a suitably sized port. Other wafers may include awafer port template so that the user may cut an opening in the templatesuitable for accommodating the stoma. Still other wafers may includewafer ports which may be manually shaped by the user to accommodate thestoma.

In addition to the one-piece and the two-piece system described above,other non-invasive ostomy ports are known in the art. Some example aredescribed in U.S. Pat. No. 7,250,040 to Andersen; U.S. PatentApplication Publication Number 2004/0181197, 2007/0088300, and2007/0191794, to Clive et al.; and U.S. Pat. No. 6,689,111 to Mulhauseret al.

U.S. Pat. No. 7,250,040 relates to “an arrangement at a stoma bag of thetype used by persons or animals with a colostoma, including a flexiblebag (flexibag) and a ring fastener/magazine ring, where the ringfastener/magazine ring is designed to be connected to a stoma plate, andwhere, in its initial position, the entire flexibag is located in or inclose proximity to the ring fastener/magazine ring.”

U.S. Patent Application Publication Number 2004/0181197 relates to “aflexible membrane is situated within a rigid or semi-rigid cap. The edgeof the cap wall is adhesively fixed to the tissue surrounding the stoma.The interior of the cap is pressurized to press the membrane to seal thestoma against the discharge of solid and semi-solid waste. Gas escapesthrough a vent with a filter element. The cap can be pressurized by anexternal pump or an integral pump member situated on top of the cap. Arelief valve prevents over pressurization. A collection pouch can beprovided as part of a device. The device can be removably mounted on astandard two-piece faceplate.”

U.S. Patent Application Publication Number 2007/0088300 relates to “asingle-use ostomy appliance is described including an ostomy couplingfor releasable coupling first and second portions at a stomal orifice.The two portions may be separable body-side and non-body-side parts, orthe two portions may be portions of a unitary ostomy device such as acontrolled evacuation device. The coupling includes a mechanicalfastener configured such that the coupling is rendered substantially notresecurable after the fastener is released.”

U.S. Patent Application Publication Number 2007/0191794 relates to “acontrolled evacuation ostomy appliance comprises a membrane that isurged into sealing engagement with a stoma, by the generation of radialtension in the membrane. A tensioning device applies tension, withrespect to the stoma, at one or more positions that are (i) outboard ofthe periphery of the projecting portion of the stoma, and/or (ii)between the level of the peristomal skin and the level of the mostprojecting part of the stoma. Tension limiting means are disclosed. Themembrane may be gas-permeable to allow flatus to be vented.”

U.S. Pat. No. 6,689,111 relates to “a balloon-like member is received inthe bowel and inflated to seal the stoma. The member includes a thin,flexible wall defining an opening. A rigid or semi-rigid cap retains themember and closes the opening in the member wall. Skin comfortableadhesive adheres the edge of the cap to the tissue surrounding thestoma. A flexible dilation tube facilitates insertion of the member andcooperates with a pump to inflate the member. The cap is preferablyremoveably attached to a standard two-piece ostomy faceplate and isprovided with a filter element to vent flatus.”

SUMMARY OF THE INVENTION

According to an aspect of some embodiments of the present inventionthere is provided an ostomy appliance comprising an adaptor having adistal end adapted to be coupled to an ostomy wafer and a proximal endadapted to be coupled to a cap, said distal end having an opening influid communication with an opening in said proximal end.

According to some embodiments of the invention a cap is provided,adapted to be removably coupled to said adaptor.

According to some embodiments of the invention, said ostomy wafer isremovably coupled to said adaptor.

According to some embodiments of the invention, said adaptor includes asealing mechanism for sealing a wafer/adaptor interface.

According to some embodiments of the invention, said adaptor includes anattachment mechanism configured to mate with an attachment element onsaid wafer, and said sealing mechanism is integral to said attachmentmechanism.

According to some embodiments of the invention, said adaptor includes anattachment mechanism for mating with an attachment element on saidwafer.

According to some embodiments of the invention, said attachmentmechanism includes a snap-fit mechanism.

According to some embodiments of the invention, said attachmentmechanism includes a twist-and-lock mechanism.

According to some embodiments of the invention, said attachmentmechanism comprises a chemical bonding mechanism.

According to some embodiments of the invention, there is provided a caplocking mechanism for affixing said cap to said adaptor.

According to some embodiments of the invention, the cap is affixed bythreading onto the adaptor.

According to some embodiments of the invention, said cap lockingmechanism is adapted to sealingly couple between the cap and theadaptor.

According to some embodiments of the invention, said sealing isconfigured to withstand a pressure differential of 15 mmHg.

According to some embodiments of the invention, said sealing isconfigured to withstand a pressure differential of 50 mmHg.

According to some embodiments of the invention, said sealing isconfigured to withstand a pressure differential of 150 mmHg.

According to some embodiments of the invention, said adaptor includes anopening for releasing gas flowing from the stoma.

According to some embodiments of the invention, said opening isselectively controlled by a user of the ostomy appliance.

According to some embodiments of the invention, said adaptor includes arotatable ring for releasing gases flowing from the stoma.

According to some embodiments of the invention, manipulating saidrotatable ring adjusts a release rate of said gas.

According to some embodiments of the invention, said adaptor includes agas filtering mechanism for filtering gases flowing from the stoma.

According to some embodiments of the invention, there is provided asealing element adapted to be accommodated within an interior cavity ofsaid adaptor.

According to some embodiments of the invention, said sealing elementincludes a soft elastomer.

According to some embodiments of the invention, said sealing elementincludes an inflatable balloon.

According to some embodiments of the invention, said sealing elementincludes a compressed foam element.

According to some embodiments of the invention, said compressed foamelement is adapted to filter gases flowing from the stoma.

According to some embodiments of the invention, less than 15 cc of theinternal lumen is available to be occupied by stomal waste when worn.

According to some embodiments of the invention, less than 5 cc of theinternal lumen is available to be occupied by stomal waste when worn.

According to some embodiments of the invention, less than 1 cc of theinternal lumen is available to be occupied by stomal waste when worn.

According to some embodiments of the invention, said ostomy appliancedoes not press on the stoma when worn.

According to some embodiments of the invention, the axial length of theclosed ostomy appliance is 12 mm or less.

According to some embodiments of the invention, the axial length of theclosed ostomy appliance is 6 mm or less.

According to an aspect of some embodiments of the present inventionthere is provided an ostomy component sealing system for sealing to anostomy wafer comprising: a housing adapted to be attached to said wafer;and a sealing mechanism, formed of at least one element, that resiststhe flow of pressurized gasses through the housing-wafer interface.

According to some embodiments of the invention, the at least one sealingmechanism element comprises an element integrally formed in the housingwhich presses against a surface of the wafer to form a seal that resiststhe outflow of gasses under pressure from the stoma.

According to some embodiments of the invention, the at least one sealingmechanism element comprises an element integrally formed in the waferwhich presses against a surface of the housing to form a seal thatresists the outflow of gasses under pressure from the stoma.

According to some embodiments of the invention, the at least one sealingmechanism element comprises a separate element contained within a cavityof the wafer which presses against a surface of at least one of thehousing and the stoma to form a seal that resists the outflow of gassesunder pressure from the stoma.

According to some embodiments of the invention, the housing comprisesthe housing of an ostomy cap.

According to some embodiments of the invention, the housing comprises alumen having a proximal end, and is attached to a collapsed collectionbag which closes the proximal end.

According to some embodiments of the invention, the housing is attachedto a pouch deployment prevention element which at least partially coversthe collapsed collection bag and the closed proximal end.

According to some embodiments of the invention, the housing comprises acavity sized to hold a filter, and within the cavity there is a filterfor filtering gasses flowing from the stoma.

According to some embodiments of the invention, the housing comprisesthe housing of an ostomy adaptor appliance.

According to some embodiments of the invention, the housing and the atleast one element of the sealing mechanism element do not press on thestoma.

According to an aspect of some embodiments of the present inventionthere is provided a method of sealing a stoma in a subject's bodycomprising: attaching an ostomy wafer over the stoma; attaching anadaptor to said wafer; and fitting a cap onto said adaptor.

According to some embodiments of the invention, said cap is fitted priorto attachment of said adaptor to said wafer.

According to some embodiments of the invention, a collapsed pouch isattached onto said adaptor.

According to some embodiments of the invention, said adaptor is fittedto said wafer prior to attaching said wafer over the stoma.

According to some embodiments of the invention, sealing the stoma isdone without applying direct force to the stoma.

According to an aspect of some embodiments of the present inventionthere is provided a method of sealing a stoma in a subject's bodycomprising: attaching an ostomy wafer over the stoma; and fitting ontosaid adaptor a cap comprising a collapsed pouch, a deployment preventionelement and a gas filter, without applying direct force to the stoma.

According to some embodiments of the invention, the adaptor and the capare integrally coupled.

According to some embodiments of the invention, the adaptor and thewafer are integrally coupled.

Unless otherwise defined, all technical and/or scientific terms usedherein have the same meaning as commonly understood by one of ordinaryskill in the art to which the invention pertains. Although methods andmaterials similar or equivalent to those described herein can be used inthe practice or testing of embodiments of the invention, exemplarymethods and/or materials are described below. In case of conflict, thepatent specification, including definitions, will control. In addition,the materials, methods, and examples are illustrative only and are notintended to be necessarily limiting.

BRIEF DESCRIPTION OF THE DRAWINGS

Some embodiments of the invention are herein described, by way ofexample only, with reference to the accompanying drawings. With specificreference now to the drawings in detail, it is stressed that theparticulars shown are by way of example and for purposes of illustrativediscussion of embodiments of the invention. In this regard, thedescription taken with the drawings makes apparent to those skilled inthe art how embodiments of the invention may be practiced.

In the drawings:

FIG. 1 schematically illustrates an exploded perspective view of anostomy appliance that couples a cap to an ostomy wafer through anadaptor, in accordance with an exemplary embodiment of the presentinvention;

FIG. 2A schematically illustrates a sectional view of the ostomyappliance attached to the wafer covering the stoma, in accordance withan exemplary embodiment of the present invention;

FIG. 2B schematically illustrates an exploded view of FIG. 2A, inaccordance with an exemplary embodiment of the present invention;

FIG. 2C schematically illustrates an adaptor and a sealing elementforming part of the ostomy appliance, in accordance with an exemplaryembodiment of the present invention;

FIG. 2D schematically illustrates an exploded perspective view of anostomy appliance for coupling a cap to an ostomy wafer, in accordancewith an exemplary embodiment of the present invention;

FIG. 2E schematically illustrates an cross sectional view of the ostomyappliance of FIG. 2D, in accordance with an exemplary embodiment of thepresent invention;

FIG. 2F schematically illustrates a perspective view of the housing andattachment mechanism of an ostomy appliance cap, in accordance withexemplary embodiments of the present invention;

FIG. 2G schematically illustrates a perspective view of the housing,sealing element, and attachment mechanism of an ostomy appliance cap, inaccordance with exemplary embodiments of the present invention;

FIG. 2H schematically illustrates a perspective view of the housing,sealing element, and attachment mechanism of an ostomy appliance cap, inaccordance with exemplary embodiments of the present invention;

FIG. 2I schematically illustrates an exploded perspective view of anostomy assembly coupled by threaded attachment, in accordance withexemplary embodiments of the present invention;

FIG. 2J schematically illustrates a perspective view of the adaptorcomponent of the ostomy assembly of FIG. 2I, in accordance withexemplary embodiments of the present invention;

FIG. 2K schematically illustrates a perspective view of the capcomponent of the ostomy assembly of FIG. 2I, in accordance withexemplary embodiments of the present invention;

FIG. 3 schematically illustrates an exploded perspective view of adaptorand sealing element, in accordance with an exemplary embodiment of thepresent invention;

FIG. 4A schematically illustrates a partial-exploded perspective view ofthe cap and the adaptor in the ostomy appliance having an optional gasrelease mechanism, in accordance with an exemplary embodiment of thepresent invention;

FIGS. 4B and 4C schematically illustrate sectional views of the capfitted onto the adaptor, the latter showing a gas flow path between thecap and the adaptor as part of the gas release mechanism, in accordancewith some exemplary embodiments of the present invention;

FIG. 4D schematically illustrates an exploded perspective view of alow-profile ostomy adaptor with rotary slider, in accordance withexemplary embodiments of the present invention;

FIG. 4E schematically illustrates a cross sectional view of theassembled ostomy adaptor of FIG. 4D, in accordance with exemplaryembodiments of the present invention;

FIG. 4F schematically illustrates a detailed cross sectional view of theassembled ostomy adaptor of FIG. 4D, in accordance with exemplaryembodiments of the present invention;

FIG. 5A schematically illustrates a perspective view of an adaptor and aremovable cap included in a ostomy appliance having an optional gasrelease mechanism, in accordance with some exemplary embodiments of thepresent invention;

FIG. 5B schematically illustrates a sectional view of an ostomyappliance having an optional gas release mechanism, in accordance withsome exemplary embodiments of the present invention;

FIGS. 6A and 6B schematically illustrate sectional views of a cap fittedonto an adaptor, the latter showing a gas flow path through a gas filterbetween the cap and the adaptor as part of a gas release mechanism, inaccordance with some exemplary embodiments of the present invention;

FIG. 7A schematically illustrates a perspective view of an adaptorhaving a flexible fixation ring for gas release in a ostomy appliance,in accordance with some exemplary embodiments of the invention;

FIG. 7B shows a front view of the adaptor with the flexible fixationring in a gas release mode, in accordance with some exemplaryembodiments of the invention;

FIG. 8 schematically illustrates a sectional view of an adaptor havingan external ventilation port for gas release in an ostomy appliance inaccordance with some exemplary embodiments of the present invention;

FIG. 9 schematically illustrates a sectional view of an adaptor havingan external ventilation port for gas release in an ostomy appliance, inaccordance with some exemplary embodiments of the present invention;

FIG. 10A schematically illustrates a perspective view of an adaptor andan inflatable sealing element in an ostomy appliance, in accordance withsome exemplary embodiments of the present invention;

FIG. 10B schematically illustrates a sectional view of the adaptor withthe inflatable sealing element inside a cavity, in accordance with someexemplary embodiments of the present invention;

FIGS. 10C and 10D schematically show side views of inflatable sealingelement applying pressure in different directions, in accordance withsome exemplary embodiments of the invention;

FIG. 11 schematically illustrates a sectional view of an adaptor with acompressible sealing element in an ostomy appliance, in accordance withsome exemplary embodiments of the present invention;

FIG. 12 schematically illustrates a sectional view of the ostomyappliance attached to the wafer covering the stoma and having theadaptor with a plug, in accordance with some embodiments of the presentinvention;

FIG. 13 schematically illustrates a sectional view of the ostomyappliance attached to the wafer covering the stoma and having theadaptor with an absorbing pad, in accordance with some embodiments ofthe present invention;

FIG. 14 schematically illustrates a sectional view of the ostomyappliance attached to the wafer covering the stoma and having theadaptor with a disc-shaped absorbing pad, in accordance with someembodiments of the present invention;

FIG. 15 schematically illustrates a sectional view of the cap with adisc-shaped absorbing pad, in accordance with some embodiments of thepresent invention;

FIGS. 16A and 16B schematically illustrate perspective views of,respectively, an adaptor having a flushing-type sealing element in anostomy appliance, and a cross-section of the sealing element, inaccordance with some exemplary embodiments of the present invention;

FIG. 16C schematically illustrates a sectional view of the adaptor withthe sealing element, in accordance with some exemplary embodiments ofthe present invention;

FIG. 17A schematically illustrates a perspective view of a flushing-typesealing element, in accordance with some exemplary embodiments of thepresent invention;

FIG. 17B schematically illustrates a sectional view of adaptor with thesealing element inside a cavity, in accordance with some exemplaryembodiments of the present invention;

FIG. 18 schematically illustrates a section of an adaptor including aflushing-type sealing element in an ostomy appliance, in accordance withsome exemplary embodiments of the present invention;

FIG. 19 schematically illustrates a sectional view of an integral ostomyappliance for attaching to a wafer, in accordance with some exemplaryembodiments of the present invention;

FIG. 20 schematically illustrates a sectional view of an ostomyappliance including an integral adaptor/wafer, in accordance with someexemplary embodiments of the present invention;

FIG. 21 schematically illustrates a sectional view of an integral ostomyappliance including a collapsed pouch, a wafer, and a lid, in accordancewith some exemplary embodiments of the present invention;

FIG. 22A schematically illustrates a perspective view of the adaptorshown in FIGS. 5A and 5B including an integral cap, in accordance withsome exemplary embodiments of the present invention;

FIG. 22B schematically illustrates a sectional view of the adaptor andthe integral cap shown in FIG. 22A, in accordance with some exemplaryembodiments of the present invention;

FIG. 22C schematically illustrates an exploded perspective view of anintegral ostomy appliance including a collapsed pouch, a wafer, afilter, and a lid, in accordance with exemplary embodiments of thepresent invention;

FIG. 22D schematically illustrates a perspective view of the assembledostomy appliance of FIG. 22C, in accordance with exemplary embodimentsof the present invention;

FIG. 23 is a flow chart of a method of covering a stoma with an ostomyappliance, in accordance with an exemplary embodiment of the presentinvention;

FIG. 24 is a flow chart of a method of using a smart cap with an ostomyappliance, in accordance with an embodiment of the present invention;

FIG. 25 is a picture illustrating an ostomy appliance worn on the bodywithout a cap, in accordance with an exemplary embodiment of the presentinvention;

FIG. 26 is a picture illustrating an ostomy appliance worn on the bodywith a cap, in accordance with an exemplary embodiment of the presentinvention;

FIG. 27 is a picture illustrating an ostomy appliance worn on the bodywith a cap, the lid being removed and the waste pouch deployed, inaccordance with an exemplary embodiment of the present invention; and

FIG. 28 is a block diagram of an ostomy appliance and its components, inaccordance with some exemplary embodiments of the present invention.

DESCRIPTION OF SPECIFIC EMBODIMENTS OF THE INVENTION

The present invention, in some embodiments thereof, relates to the fieldof surgically created openings for waste removal (stoma) in livingsubjects, and more particularly, to devices and methods for covering astoma as may be used in the case of a colostomy, ileostomy or urostomy.

An aspect of some embodiments of the present invention relates tocoupling a cap to an ostomy wafer. Optionally, the coupling is temporaryand/or reversible. In some embodiments, the coupling is permanent and/orintegral.

An aspect of some embodiments of the present invention relates to anostomy appliance component for coupling a cap to an ostomy wafer.Optionally, the coupling is through an adaptor having a proximal end forconnecting a cap and an opposing distal end for connecting an ostomywafer. Optionally, the proximal and the distal end are fluidcommunication with one another. “Proximal end” refers to an end of theadaptor furthest away from the stoma in a direction away from theabdomen while “distal end” refers to an end of the adaptor closest tothe stoma in a direction into the abdomen.

In some embodiments, the adaptor is adapted to couple the cap to thewafer by pressing the cap against the wafer. In some embodiments, thecap and/or the wafer is detachable. Optionally, an adaptor may beconfigured to accommodate a cap by an attachment mechanism configurationselected according to the cap design. Optionally, an adaptor may beconfigured to accommodate a wafer by an attachment mechanismconfiguration selected according to the wafer design. Thecap-accommodating attachment mechanism configuration on the adaptor maybe different than the attachment mechanism configuration used by thewafer. Potentially, this permits wafers and caps to be used incombination within a single stack of elements comprising an ostomyappliance (an “ostomy stack”), even in certain cases where theircombination was not contemplated as a requirement of their originaldesign. Alternatively, a cap attachment element may be fitted onto thecap and/or the adaptor for enabling coupling of the prior art cap to thewafer. Optionally, the cap attachment element may be exchangeable,allowing coupling of different types of caps to the wafer. In someembodiments, the cap is a non-invasive cap optionally housing acollapsed waste collection pouch. Optionally, the pouch may beautomatically or manually deployed. Optionally, the adaptor attaches toa pouch attachment element on the wafer, for example a flange used forattaching waste collection pouches.

An aspect of some embodiments of the present invention relates toprimary sealing of the ostomy appliance. Primary sealing resists theflow of gasses at pressures normally generated from within a stoma, forexample 10-20 mmHg, 30-70 mmHg, 100-200 mmHg, or a range withintermediate values. Primary sealing also prevents the leakage of solidand liquid stomal discharge.

In some exemplary embodiments, the ostomy appliance may include asealing system which provides for primary sealing at one or morecomponent-component interfaces and/or component-tissue interfaces. Forexample, sealed component-component interfaces may be between a cap andan adaptor, an adaptor and a wafer, or a cap and a wafer. Also forexample, a sealed component-tissue interface may be between a cap and astoma, an adaptor and a stoma, a wafer and a stoma, or between one ofthose ostomy components and the peristomal skin. In some exemplaryembodiments, sealing at component-component interfaces is designed suchthat passage of gas at the interface is substantially prevented when apressure differential in the range of, for example, 10-20 mmHg, 30-70mmHg, 100-200 mmHg, or a range with intermediate values exists acrossthe interface.

An aspect of some embodiments of the present invention relates to theintroduction of fluids to the stoma, surrounding tissue and/or organsurfaces internal to the stoma. The ostomy appliance may further includea flushing mechanism for washing an inside of the appliance, and/or forwashing the peristomal skin and/or the stoma. Additionally oralternatively, the flushing mechanism may be used for intestinalirrigation.

An aspect of some embodiments of the present invention relates to ostomycomponents which couple to one another in potentially differentcombinations of structural roles and/or attachment mechanisms. In someexemplary embodiments, the adaptor, the cap, and the wafer are threeseparate attachable components. Optionally, the ostomy appliance is anon-disposable item, and all the components are washable. Alternatively,one or more components of the ostomy appliance is a disposable item,that is, one or more of the cap, the adaptor, and the wafer areseparately disposable after a predetermined number of uses or apredetermined amount of time which may vary according to the component.For example, the cap may be disposed of after a single use, while thewafer after three days of use, and the adaptor after one year of useduring which time it may be washed on a regular basis.

In some embodiments, the cap and the ostomy appliance are a singlecomponent attachable to the wafer. Alternatively, the ostomy applianceand the wafer are a single component to which the cap may be attached.Alternatively, the cap, the ostomy appliance and the wafer are a singlecomponent.

A potential advantage of having an ostomy appliance which may be usedwith caps and/or wafers of potentially uncoordinated design is a reducedproduction cost compared to that of producing it together with the capand/or wafer, making the item more accessible to users at a lower cost.Another potential advantage is to allow users who have established apreference for one ostomy component, such as a wafer, to enjoy access toa wider range of alternatives for other ostomy components, such as caps.

In contrast, a potential advantage of combining into merged ostomycomponents the functions of, for example, a cap, a wafer, and/or anadaptor is the simplification of a potentially tedious procedurerequiring that the user attach each component separately. This may beparticularly of benefit to users having poor motor skills.

An aspect of some embodiments of the present invention relates toprotection of the stoma from potentially damaging sustained contact withcomponents of a surrounding ostomy appliance. In some embodiments, theostomy appliance is adapted to be physically isolated from the stoma,optionally from the peristomal skin, potentially preventing possibletissue damage to the stoma and/or surrounding area due to contact,friction, mechanical stress and/or use of non-biocompatible materials inpart of the appliance.

In some exemplary embodiments, the distal end of an adaptor iscross-sectionally shaped to conform to a shape of the stoma. Forexample, the cross-sectional shape may be circular for use with circularstomas, or may have non-circular shapes, for example, elliptical for usewith elliptically shaped stomas. Additionally or alternatively, thedistal end is cross-sectionally shaped to conform to the shape of awafer port in the wafer and/or the proximal end is cross-sectionallyshaped to conform to the shape of a cap.

In some exemplary embodiments, the adaptor is configured for beingsealingly attached at the distal end to a pouch attachment element on awafer, so that the seal peripherally surrounds the wafer port.Optionally, the distal end attaches to another attachment element on thewafer, for example, a rim for fitting a cap, or a dedicated attachmentelement configured for attaching the adaptor. At this wafer/adaptorinterface, the connection may include use of an O-ring or other type ofsealing element for preventing waste content leakage. Attaching theadaptor to the wafer allows for waste content flow from the stoma,optionally through the wafer port, into the adaptor, without the adaptorbeing in physical contact with the stoma. This physical isolation ispotentially advantageous for protecting the tissue against damage frommechanical stress and/or use of non-biocompatible materials. In someembodiments, the adaptor is sealingly attached to the wafer as a singlecomponent, for example, during a manufacturing process wherein theadaptor is formed integrally with the wafer, or is attached using knownprocesses, including welding or bonding. Bonding comprises one or bothof chemical bonding and adhesive bonding. Adhesive bonding, according tothe specific embodiment, includes adhesive materials used and processesperformed during original manufacture and/or adhesive materials used andprocesses performed by the end user.

In some exemplary embodiments, the adaptor may be used, according tospecifics of its design, with one or more of an assortment ofalternative wafer designs, potentially including designs for which usewith an adaptor was not originally contemplated. For example, differentembodiments of the adaptor may have different types and/or sizes ofattachment mechanisms for mating with the pouch attachment elements ofdifferent wafer designs. Optionally, the adaptor is configured for usewith wafers having adjustable size wafer ports for accommodatingdifferent stoma sizes. In some embodiments, the adaptor has aone-size/type attachment mechanism which mates with a one-size/typepouch attachment element in a “dedicated” wafer.

In some embodiments, the adaptor is configured for being used with stomaof different heights, for example, by having a single height which issuitable for varying stoma heights. For example, the single heightadaptor may be capable of accommodating stomal protrusion in a proximaldirection away from the abdomen by up to 2 cm, 1.5 cm, 1 cm, 0.5 cm, orless. Alternatively, the adaptor can be of a particular height accordingto the requirements of a particular user. For example, a first sizeadaptor may accommodate a stomal protrusion ranging from 0-0.5 cm, asecond size adaptor may accommodate a stomal protrusion ranging from 0.5cm-1.5 cm, and a third size adaptor may accommodate a stomal protrusionranging from 1.5 cm-2 cm. In some embodiments, the adaptor providesthese and/or other adaptations, a wafer of a type suitable to be cut tosize for use with a standard size adaptor.

An aspect of some embodiments of the present invention relates to theflexibility of an ostomy appliance. In some exemplary embodiments, majorstructural elements of the adaptor and/or the cap, for example, theirbody or housing, may be wholly made of a flexible and/or elasticmaterial, for example, silicone rubber or thermoplastic elastomer (TPE).Optionally, the material may be of a durometer ranging from 20-80 ShoreA, 25-75 Shore A, 35-75 Shore A, 45-75 Shore A, 50-75 Shore A. In someembodiments, attachment mechanisms are of a sufficiently rigid materialfor substantially limiting a possibility of mechanical failure ofattachment mating between components. For example, the material may be asilicone rubber of high durometer in a range of between 50-90 Shore A,55-85 Shore A, 60-80 Shore A, or may be a semi-rigid thermoplastic suchas polyethylene or a rigid thermoplastic such as polyamide. In someembodiments, the attachment mechanism is formed from the same materialas the adaptor and/or cap. Alternatively, the attachment mechanism maybe formed from different material than the adaptor and/or cap. Separatematerials offer a potential advantage in that the adaptor and/or cap maybe formed from the flexible and/or elastic material while the attachmentmechanism is formed from the more rigid material.

An aspect of some embodiments of the present invention relates to theuse of combinations of ostomy components having different ostomycomponent features. In some exemplary embodiments, the adaptor is usedwith the cap attached to the proximal end by the user at the time ofuse. Optionally, the cap is a non-invasive cap. In some embodiments, thecap is disposable. Alternatively, the proximal end is attached to thecap as a single component, for example, during a manufacturing processwherein the adaptor is formed integrally with the cap, or is attachedusing known processes, including welding or bonding.

In some embodiments, the cap houses the collapsed pouch and includes aremovable lid for allowing pouch deployment. In some embodiments, thecollapsed pouch is accommodated inside a housing which is attached tothe adaptor. Optionally, the housing and pouch are replaceable as asingle unit. In some embodiments, the cap is integrally attached to theadaptor and the housing accommodating the pouch is removably attached tothe adaptor, for example, by inserting through an opening in the capfollowing removing of a lid. In some embodiments, the collapsed pouch isdeployable when a user needs to eliminate waste through the stoma. Insome embodiments, deployment of the pouch is automatic, for example,responsive to a pressure buildup inside the ostomy appliance from wastecontent. Additionally or alternatively, the user deploys the pouch, forexample, in response to a signal from a warning mechanism in the ostomyappliance, or periodically according to predetermined criteria, orrandomly as desired, or any combination thereof.

In some embodiments, the ostomy appliance includes a gas release systemfor allowing the user to release gases from within the stoma withoutdeploying the pouch or removing the cap. International PatentPublication Nos. WO 2011/13872 A2, WO 2011/138731 A2, and WO 2011/138727A1 by the applicant and all incorporated herein by reference in theirentirety, describe various embodiments of smart caps, automatic andmanual pouch deployment mechanisms, pressure warning mechanisms, gasrelease mechanisms, and irrigation mechanisms, which may be incorporatedindividually or in combination in some embodiments of the presentinvention.

In some exemplary embodiments, use of the ostomy appliance may includeattaching the adaptor to the wafer prior to placing the wafer over thestoma. Alternatively, the user may first place the wafer over the stomaand then attach the adaptor. The cap may be attached to the adaptoreither before attachment to the wafer, or after attachment. In someembodiments, the user replaces the cap following deployment of thepouch.

An aspect of some embodiments of the present invention relates tosecondary sealing of the ostomy appliance. Secondary sealing controlsthe access of stomal waste, particularly liquid waste but potentiallyalso gaseous and/or solid waste, to tissue and/or appliance surfacesinside the ostomy appliance. In some embodiments, secondary sealing mayseal and/or contribute to sealing against leakage from the ostomyappliance of liquids, solids, and/or stomal gases. An aspect of someembodiments of the present invention relates to a sealing element foruse with an ostomy appliance for providing sealing at a wafer/stomainterface. Use of the sealing element provides a second level of sealingin the ostomy appliance in addition to that at the wafer/adaptorinterface. The sealing element is sized and shaped to be fittedlyaccommodated inside the adaptor, and optionally includes a hole forallowing waste content flow through the element. Optionally, the sealingelement is adapted to peripherally surround the wafer port and to pressagainst the wafer for providing sealing at the wafer/stoma interface.Additionally or alternatively, the sealing element presses against thestoma for providing the sealing.

In some exemplary embodiments, the sealing element is adapted to directat least a portion of the waste content flow from the stoma through theopening in an axial direction towards the proximal end. Optionally, aremaining portion of waste content reaching the sides of the adaptor isan amount which may be readily handled by the sealing arrangement at thewafer/adaptor interface for preventing possible waste content leakage.In some embodiments, user cleaning of the adaptor is facilitated by thereduced amount of waste content reaching the walls of the adaptor.

In some exemplary embodiments, the sealing element may include aninflatable element, for example, an annular shaped balloon, which isinflated inside the adaptor. Alternatively, the sealing element mayinclude a compressible material adapted to exert a force against theinner walls of the adaptor. In some embodiments, the sealing elementallows gas flow (flatus) through the compressible material. In someembodiments, the sealing element is annular in shape. In someembodiments, the sealing element is dimensioned to accommodate the stomaaccording to its dimensions. Alternatively, the sealing element includesa non-circular shape for accommodating stoma of non-circular shape.

In some exemplary embodiments, the sealing element may be used to plugthe wafer port and/or the stoma for preventing waste content leakinginto the adaptor from the stoma. Optionally, the plug is disposable andis unplugged from the wafer port and/or the stoma when the wastecollection pouch is deployed or when the cap is removed from theadaptor. In some embodiments, the sealing element includes an absorbentmaterial for absorbing liquid waste content flowing into the adaptorfrom the stoma. Additionally or alternatively, a liquid absorbingelement may be included in the adaptor together with the sealing elementfor absorbing the liquid waste content.

In some exemplary elements, the ostomy appliance may provide formultiple types of sealing relative to the stoma. For example, onesealing type may be at the wafer/adaptor interface. Another sealing typemay be at the wafer/stoma interface. Yet another sealing type may be ata cap/adaptor interface at the proximal end where the cap is attached tothe adaptor. And yet another sealing type may include at anabdomen/wafer interface where the wafer is pressed against the abdomen.Optionally, sealing at the abdomen/wafer may not be a complete sealing.

In some exemplary embodiments, the sealing element may be compressibleand may be made of a highly elastic material, for example, siliconerubber of durometer in a range from 1-30 Shore A, 2-20 Shore A, 2-15Shore A, 3-10 Shore A, 3-8 Shore A. Alternatively, the sealing elementmay include a material that distends when in contact with a wetenvironment such as, for example, cotton or rayon.

An aspect of some embodiments of the present invention relates tostructurally combining features such as secondary sealing and theintroduction of fluids to the stomal environment. In some exemplaryembodiments, the sealing element may form part of a flushing mechanismin the ostomy appliance for cleaning an interior of the adaptor and/orthe peristomal skin and/or the stoma. Optionally, the flushing mechanismmay be used for intestinal irrigation. In some embodiments, the sealingelement fluidly connects to a valve exteriorly connected on the adaptorand through which a flushing fluid is introducible into the adaptor.Additionally, the sealing element includes a fluid distribution systemhaving one or more inlets and one or more outlets through which thefluid flows through the sealing element into the interior of theadaptor.

Alternatively, said flushing mechanism may be formed as part of theadaptor itself instead of being included in the sealing element.Optionally or alternatively, the flushing mechanism may be formedpartially as part of the adaptor and partially as part of the sealingelement.

Before explaining at least one embodiment of the invention in detail, itis to be understood that the invention is not necessarily limited in itsapplication to the details of construction and the arrangement of thecomponents and/or methods set forth in the following description and/orillustrated in the drawings and/or the Examples. The invention iscapable of other embodiments or of being practiced or carried out invarious ways.

Exemplary Ostomy Appliances

Exemplary Ostomy Appliance with Adaptor

Reference is now made to FIG. 1 which schematically illustrates anexploded perspective view of an ostomy appliance 100 for coupling a cap110 to an ostomy wafer 102, according to an exemplary embodiment of thepresent invention. In some embodiments, appliance 100 performs thefunction of an adaptor permitting coupling of the wafer 102 and the cap110 into a single ostomy stack. Additionally or alternatively, theappliance 100 may perform other functions, as detailed in subsequentsections.

Reference is also made to FIG. 2A which schematically illustrates asectional view of ostomy appliance 100 covering a stoma 104 on a body106, to FIG. 2B which schematically illustrates an exploded view of FIG.2A, and to FIG. 2C which schematically illustrates an adaptor 108 and asealing element 109 forming part of the ostomy appliance, according toan exemplary embodiment of the present invention. Optionally, wafer 102is an ostomy wafer of a design not originally contemplated for use withan adaptor 108.

In some exemplary embodiments, adaptor 108 includes a proximal end 120having a proximal opening 122 and a distal end 124 having a distalopening 126, the openings in fluid communication with one another.Proximal opening 122 leads into a chamber 128 adapted to accommodate ahousing 112 optionally including a collapsed pouch 114. Optionally,housing 112 is part of a cap 110 which may be attached to proximal end120. Alternatively, chamber 128 is shaped to accommodate pouch 114without housing 112. Optionally, distal end 124 is shaped to accommodatehousing 112 and/or pouch 114 in a sealing manner. Distal end 124 isadapted to abut with wafer 102 such that distal opening 126 optionallyconcentrically aligns with wafer port 118. In this configuration, waferport 118 is in fluid communication with both distal opening 124 andproximal opening 122.

In some embodiments of the invention, the adaptor 108 is constructedwith a minimum of internal free space when attached to wafer 102. Thefree space available is, for example, 1 cc, 5 cc, 10 cc, 20 cc, 30 cc,50 cc, or any volume in between. A potential advantage of limitedinternal free space is limitation of the accumulation of stomaldischarge, such as fecal matter, mucus, or other liquid. In someembodiments, space is minimized, for example, by the inclusion ofadditional material in the construction of the adaptor, beyond what isrequired for structural support. It should be noted that in someembodiments, space internal to adaptor 108 is occupied by another ostomyappliance component, such as a sealing element 109, an absorbing pad(related to, for example, as absorbing pad 176 of FIG. 14, hereinbelow)or another space-filling element.

In some embodiments of the invention, sealing is maintained without theapplication on the tissue of the stoma of direct force and/or pressure;or with low pressure, for example pressure below the 50 mmHg, below 50mmHg, below 25 mmHg, below 10 mmHg, or below 5 mmHg. A sealing element109 is, for example, shaped so that a minimum distance from the tissueof the stoma is ensured. This may provide an advantage by reducing thepotential for tissue damage and/or for extending the appliance's usageduration.

Exemplary Adaptor Attachment Mechanism

In some exemplary embodiments, adaptor 108 further includes anattachment mechanism 130 peripherally surrounding distal opening 126 andadapted to mate with an attachment element 132, for example a flange, inwafer 102 at a wafer/adaptor interface 103.

Functions of an adaptor attachment mechanism 130 potentially include oneor more of: secure coupling of an adaptor to a wafer 102, reversiblecoupling of an adaptor to a wafer 102, and/or sealed coupling of anadaptor to a wafer 102.

In some embodiments, attachment element 132 is a pouch attachmentelement of a type generally found in existing wafers and onto which arim to an opening in an existing waste content collection pouch isgenerally attached. A mating arrangement between attachment mechanism130 and flange 132 is configured for preventing waste content leakagetherethrough, and potentially includes use of an elastomeric seal and/orother sealing element yielding at least primary-type sealing, forexample against the outflow of stomal gasses. In some embodiments, themating arrangement between attachment mechanism 130 and flange 132potentially prevents undesired detachment of adaptor 108 from wafer 102,and includes use of a snap-fit mechanism, a twist-and-lock mechanism, orother suitable locking mechanism. Optionally, the mating arrangementallows detachment when desired.

Exemplary Sealing Element

In some exemplary embodiments, ostomy appliance 100 includes a sealingelement 109 which is directed toward secondary sealing that reducesinterior access of wastes to tissue and ostomy appliance surfaces, andin some embodiments also participates in primary sealing against leakagefrom the ostomy appliance. Sealing element 109 has a first opening 134,an opposing second opening 136, and a passage 138 fluidly communicatingboth openings. Functions of a sealing element 109 include, for example,one or more of: providing a second seal to supplement sealing againstwaste leakage provided by the wafer 102 itself and/or by attachmentmechanism 130; occupying a space between the stoma and the adaptor'sbody, limiting the accumulation of fecal matter in the adaptor; andproviding absorbency to contain waste leakage so that it does notcontaminate other elements or surfaces of the ostomy stack, and/or otherfunctions as herein described.

Sealing element 109 is optionally configured for being inserted into acavity 140 between chamber 128 and distal opening 126 such that secondopening 136 aligns with wafer port 118. Optionally, sealing element 109is reversible and fittable inside cavity 140 with first opening 134aligned with wafer port 118. Optionally, insertion of sealing element109 into cavity 140 is done by a user of ostomy appliance 100.Alternatively, said insertion is done during the device assembly andadaptor 108 is provided to the user with sealing element 109 alreadyinserted into cavity 140. Optionally, the user can remove sealingelement 109, for example for cleaning it or for replacing it with a newsealing element. Alternatively, sealing element 109 is permanentlyattached adaptor 108 within cavity 140. In some embodiments, sealingelement 109 is annular shaped as shown. In some embodiments, itsgeometrical shape is non-annular for corresponding with a geometricalshape of cavity 140. Optionally, its geometrical shape corresponds withthat of stoma 104 and/or wafer port 118 without putting pressure onstomal tissue.

In some embodiments, sealing element 109 is made of a highlycompressible material such as for example, silicone rubber orthermoplastic elastomer, of durometer in a range from 1-30 Shore A, 2-20Shore A, 2-15 Shore A, 3-10 Shore A, 3-8 Shore A. Optionally, theelasticity and structure of sealing element 109 are chosen such thatsealing element 109 is compressible against wafer 102 at a wafer/stomainterface 105 when adaptor 100 is attached to flange 132. Optionally,the compression force between sealing element 109 and wafer 102 atwafer/stoma interface 105 is high enough to ensure a reliable sealingand prevent waste content and/or flushing fluid leakage therethrough. Insome embodiments, the compression force ranges from 100 grams to 5 kg,for example, 200 grams, 500 grams, 1 kg, 2 kg, 3 kg, 4.5 kg. In someembodiments, sealing element 109 is compressibly fitted inside cavity140. Optionally, a pressure required for maintaining sealing element 109inside the adaptor without resorting to use of an adhesive materialranges from 0.1 psi to 2 psi, for example, 0.15 psi, 0.3 psi, 0.5 psi,0.8 psi, 1 psi, 1.5 psi, 1.8 psi. Alternatively, sealing element 109 ismade of a distending material for absorbing liquid waste content flowingfrom stoma 104, optionally through wafer port 118, and expanding withincavity 140. In some embodiments, sealing element 109 provides for asecond sealing mechanism in ostomy appliance 100 additional to thatprovided at wafer/adaptor interface 103. Optionally, sealing atwafer/stoma interface 105 enhances the sealing provided by wafer/adaptorinterface 103 by reducing a possible amount of waste leakage and/orflushing liquid reaching the wafer/adaptor interface. Optionally, thesealing mechanisms at wafer/stoma interface 105 and wafer/adaptorinterface 103 act as redundant system. In some embodiments, an amount ofliquid waste content absorbable by sealing element 109 is up to 100 ml,for example, 1 ml, 5 ml, 10 ml, 20 ml, 35 ml, 45 ml, 50 ml, 60 ml, 75ml, 85 ml, 90 ml, 95 ml. Optionally, sealing element 109 is able toabsorb amounts of liquid waste content in excess of 100 ml, for example,120 ml, 150 ml, 180 ml, 200 ml, or more. More details on someembodiments of sealing element 109 are discussed in greater detailfurther on in this disclosure.

Exemplary Ostomy Cap

In some embodiments, cap 110 includes housing 112 accommodatingcollapsed pouch 114. Potential functions of a cap include, for example,preventing the constant flow of waste from the stoma, indicating thebuild-up of pressure from waste, allowing waste to flow upon sensing asufficient pressure or upon action by the user, acting as a containerfor a pouch 114 which deploys to collects the waste and/or otherfunctions as herein described.

Alternatively, pouch 114 is accommodated in cap 110 externally tohousing 112. Collapsed pouch 114 is optionally deployable by removing alid 116 on cap 110 and manually extracting the pouch by the user.Alternatively, pouch 114 is deployed following removal of lid 116 by thepressure of waste content flowing from stoma 104 into adaptor 108 andpushing on the pouch. In some embodiments, lid 116 is manually removableby the user. Alternatively, lid 116 is automatically removed by thepressure pushing on the lid. In some embodiments, lid 116 is a pressuresensing lid which flexibly bulges outwards or stiffens or a combinationthereof responsive to a pressure from waste content. Optionally, lid 116bulges outwards responsive to a gas pressure inside adaptor 108.

Exemplary Ostomy Appliance with Direct Cap Attachment

Reference is now made to FIGS. 2D and 2E which schematically illustratean exploded perspective view and a cross sectional view, respectively,of an ostomy stack 3000 representing some embodiments of the invention,in which a cap 3010 is coupled to an ostomy wafer 3002, according to anexemplary embodiment of the present invention. Considered in overview,potential advantages of the embodiments represented here include, forexample, a low ostomy stack profile, a simplified stack assemblyprocedure for the user, a low production cost, and/or elasticflexibility of the ostomy stack. Other possible advantages will bedescribed in connection with additional specific features of exemplaryostomy stack 3000.

The cap 3010 includes an attachment mechanism 3030 which attaches to anattachment element 3032 of the wafer. Optionally, the attachment element3032 is a flange. Optionally, the attachment mechanism 3030 isintegrally formed with the cap housing 3046 so as to form a ring whichis held in place by the flange 3032.

In FIGS. 2F, 2G, and 2H, alternative exemplary attachment mechanisms areshown in schematic perspective view, demonstrating an exemplary varietyof the attachment designs which are contemplated, as will now bedescribed.

In FIG. 2F, attachment mechanism 3130 comprises a plurality of flangedtabs. In the example shown, the flanges are positioned to protrudeoutward from the center of the cap housing 3146. The tabs are optionallyconstructed of a rigid or semi-rigid plastic, with elasticity sufficientto bend in order to engage or disengage with attachment elements on theostomy wafer (not shown). Additionally or alternatively, said attachmentelements on the ostomy wafer bend or otherwise distort in order toengage or disengage with the tabs. Optionally, the flanged tabs areintegrally formed with the cap housing 3146.

In FIG. 2G, an exemplary attachment mechanism 3230 comprises acircumferential rim, overhanging a circumferential recess 3231 anddesigned to engage with an ostomy wafer's flange (not shown) by asnap-fit mechanism operating around the circumference of cap housing3246. The material used to form this attachment mechanism 3230 isoptionally flexible, such as silicone rubber or TPE, and optionally hasdurometer in the range of 30-80 Shore A. A sealing element 3209 maythereby be held against an ostomy wafer with sufficient force to resistthe leakage of material issuing from the stoma. Sealing element 3209 isdirected toward secondary sealing, and in some embodiments alsoparticipates in primary sealing. Additionally or alternatively,circumferential recess 3231 might, for example, be replaced with aflange, and a mating recess put on the ostomy wafer. Potentially, theuse of attachment designs compatible with flexible housings for ostomycomponents enables the construction of wholly flexible ostomy applianceswith features including, for example, manual and/or automatic gasrelease control, and collapsed waste collection pouches with pressuresensing release. A flexible ostomy appliance potentially providesadvantages for user comfort and/or resistance to detachment during bodymovements.

In FIG. 2H, an exemplary attachment mechanism comprises a plurality offlanged tabs 3330. The tabs 3330 are optionally constructed of a rigidor semi-rigid plastic, with elasticity sufficient to bend in order toengage or disengage with attachment elements on the ostomy wafer (notshown). Additionally or alternatively, said attachment elements on theostomy wafer bend or otherwise distort in order to engage or disengagewith the tabs. In the example shown, the flanges are positioned toprotrude inward toward the center of the cap housing 3346. The flangesare optionally wedge-shaped on one side, and flat on the other.

By means of their shape and elasticity, the tabs 3330 are optionallyconstructed so as to rise out of the way when pressed down over aprojecting flange on an ostomy wafer, and yet engage firmly behind itonce in place, providing sufficient force to hold sealing element 3309(a secondary sealing-directed element with a potential role in primarysealing) sealingly against the ostomy wafer. Optionally, the ostomywafer is provided with suitably arranged apertures into which theflanges of the ostomy cap insert. Optionally, the apertures or holdingflange are on the cap housing, in order to mate with flanged tabs on theostomy wafer. Optionally, and with suitable complementary changes asrequired to cap and ostomy wafer, the inward- and outward-pointingdirection of flanges are reversed. Optionally, a projection protrudesfrom at least one flanged tab 3335, for example, extending proximally sothat it is accessible from the proximal side of the device, such thatdeflecting the projection causes the flange to bend outward. Thisprovides a potential advantage for easier release of cap from the wafer.

In some embodiments of the invention, attachment of components is byadhesive bonding. In an exemplary embodiment of the invention, adhesiveis applied by a user to at least one of two ostomy components to beattached, for example a proximal surface of wafer 3002, and the secondcomponent, for example, ostomy cap housing 3046, is placed over it. Apotential advantage arises from using an adhesive that can be applied soas to provide a volume for one of the components to sink into, such as afoamed adhesive. A voluminous adhesive potentially allows adhesiveattachment over a larger surface area. A voluminous adhesive potentiallyencases a portion of one or both components, providing adhesionresistant to multiple directions of force. In an alternative embodiment,the at least one of two ostomy components is supplied to the user withan adhesive already applied and covered by a release liner. In this casethe user first removes the liner and then attaches the surfaces to oneanother to create an airtight sealing therebetween. Optionally, bothcomponents are provided with a self-adhesive material. A potentialadvantage is obtained by the use of an adhesive with a short time tosetting well enough to maintain the components in place under at leasttheir own weight, for example, a setting time of less than five seconds,less than ten seconds, or less than twenty seconds.

In some embodiments of the invention, the above principles and elementsof attachment mechanism are used alone or in combination, and withsuitable modifications in the specifics of shape or material apparent tothose skilled in the art, to achieve attachment of the ostomy cap to theostomy wafer. With suitable modifications of attachment elements,according to the embodiment of the invention, attachment of an ostomycap to an ostomy adaptor, or of an ostomy adaptor to an ostomy wafer, isachievable. With suitable modifications of attachment elements,according to the embodiment of the invention, attachment of a lid or apouch restraint to a more distal component of the ostomy stack isachievable. In some embodiments, a greater, lesser, or intermediatenumber of tabs is used than the 3-8 tabs shown, for example 2, 4, 6, 10or more. In some embodiments, a greater, lesser, or intermediate spacingor width of the tabs is used than shown; for example, tabs occupying theentire attachment circumference apart from the gaps which separate them,or 50%, or 10%. In some embodiments, greater, lesser, or intermediatetab length or flange depth is used than shown, in correspondence withthe design of complementary structures which hold or receive them.

Returning again to FIGS. 2D and 2E, the attachment interface is sealedby sealing element 3009, which is optionally held within a cavity of thecap housing 3046.

Further exemplary features of the ostomy stack potentially useful forcontrolling and directing the release of waste, or for improving usercomfort or convenience are potentially implemented as now described.

Optionally, a collapsed pouch 3014 is attached to the cap, and sealed toit, for example, by bonding (adhesive or chemical) or welding. A lid3016 restrains the bag in its collapsed state.

The collapsed pouch 3014 is optionally configured into a low profilepackage, for example by folding. Optionally, the collapsed pouch isstored at or near the proximal end of the cap housing 3046.

A low profile pouch package provides a potential advantage by requiringless thickness to be added to the protruding profile of the ostomyappliance, either proximal or distal to the pouch. The ostomy applianceis potentially less obtrusive thereby. The ostomy appliance ispotentially easier to carry and/or store thereby.

A proximal storage configuration of the pouch potentially provides anadvantage by allowing more of cavity of the cap housing 3046 to beavailable, for example, to accommodate protrusion of the stoma (notshown).

Optionally, cap housing 3046, lid 3016, and/or ostomy wafer 3002 aremade in whole or in part of flexible materials (for example, material aspreviously described herein in connection to flexible adaptors andcaps). Construction from flexible material potentially providesadvantages such as, for example, allowing the ostomy stack to conformmore easily and/or with minimal discomfort to the shape and/or motion ofthe body of the user.

Optionally, a filter 3049 is integrated into the cap 3010. Optionally,the cap housing 3046 is designed with an aperture 3050 sized to hold thefilter.

A filter potentially provides an advantage by allowing stomal gasses topassively escape during wearing of the ostomy appliance, instead ofbuilding up behind the seals of the ostomy appliance. On the other hand,a filter potentially provides an advantage by reducing the likelihood ofthis escape from happening in a sudden or uncontrolled fashion. Thefilter potentially provides the advantage of allowing such gasses toescape while controlling the leakage of fluid and solid material. Thefilter potentially provides the advantage of allowing stench-formingcomponents of gasses to be filtered from the emission.

Embedding the filter within an aperture of the cap housing potentiallyprovides an advantage by requiring less thickness to be added to theprotruding profile of the ostomy appliance in order to accommodate it.An advantage is potentially provided by having the proximal face of thefilter flush with a proximal face of the cap housing, thus easing theassembly of a pouch onto both faces in a sealing manner.

Exemplary Embodiment Of Adaptor With Threaded Cap

Reference is now made to FIGS. 2I, 2J, and 2K, which schematicallyillustrate exploded perspective views of an adaptor 3508 and cap 3510which together comprise an ostomy assembly 3500 coupled by threadedattachment. Considered in overview, potential advantages of theembodiments represented here include, for example, one or more ofreduced force, particularly reduced pressing force, required to assemblethe ostomy stack on the body; an ostomy stack profile which is minimallyelevated above the height required to accommodate a protruding stoma;and/or reduced cost of manufacturing ostomy stack components.

In some embodiments of the invention, adaptor 3508 is provided withthreading, 3556, configured to interlock its housing 3546 withcomplementary threading 3558 on the housing 3512 of cap 3510.Optionally, adaptor 3508 is further provided with a lever 3550 thatprevents unwanted detachment of cap 3510 by interfering with a surface3552 of the cap housing 3512, configured into the housing. Optionally,the housing 3512 is provided with a recess, 3560, configured to receivea portion of the lever when the adaptor 3508 and cap 3510 are fullycoupled. Optionally, a catch 3554 is provided which, when depressed,bends the lever 3550 so that it no longer interferes with surface 3552,allowing the cap 3510 to rotate and be removed from the adaptor 3508.

The locking and unlocking mechanism comprised of lever 3550 andinterfering surface 3552 may provide the advantage of preventing the cap3510 from detaching unexpectedly from the adaptor 3508. Embodimentsincluding recess 3560 potentially provide the advantage of givingtactile and/or auditory feedback to the user as the lever springs intoit, indicating that the cap 3510 has been securely fastened. Embodimentswhere the mechanism is further comprised of catch 3554 allow mechanicaladvantage and/or a broader surface area to be applied to the bending oflever 3550, overcoming the lock more easily than by direct pressure onlever 3550 itself.

The use of a rotating motion to securely couple cap 3510 to adaptor 3508may provide an advantage for patients sensitive to abdominal pain—forexample, as may occur during recovery after a surgery—by reducing theneed to push inward on the abdomen. The mechanical advantage obtained byusing a rotating motion to secure a threaded attachment mechanism 3556and 3558 may serve to assist patients lacking the strength to press-fitostomy stack components together. The wide gripping surface provided bythe rotating cap housing 3512 may provide an advantage by reducing thenumber of fine motor movements required to assemble ostomy stackcomponents on the body. Said wide gripping surface may also provide anadvantage by reducing the torque required for fastening the cap onto theadaptor.

In some embodiments of the invention, a waste pouch 3514 is providedwhich attaches to cap housing 3512, and has an opening disposed toreceive waste flowing through aperture 3566 in the cap. Optionally, thepouch is collapsed. Optionally, the pouch is collapsed by being foldedinto a low-profile package. Optionally, the collapsed pouch isrestrained from deploying by a lid 3516. The lid 3516 may be secured tocap housing 3512, for example by means of a connecting element 3564,which may be a flange. The connecting element 3564 may mate to acomplementary connecting element (not shown) of the cap housing 3512.

In some embodiments of the invention, the connecting element 3564 isdesigned so as to self-release upon a certain pressure being exerted onlid 3516. This self-release may be, for example, by means of adeformation of the material of the lid under the force of internalpressure. In embodiments where the lid restrains a collapsed pouch,self-release also allows the pouch 3514 to deploy, so that it canreceive waste.

A self-releasing lid 3516 may provide an advantage by preventingexcessive buildup of internal pressure and/or material behind the ostomyappliance. Such buildup, if unrelieved, might lead, for example, toleakage of one of the ostomy appliance seals and/or to formation ofintestinal blockage.

In some embodiments of the invention, lid 3516 is constructed with acavity 3515, sized to hold the collapsed pouch 3514.

A lid 3516 with a cavity 3515 may, by reducing one thickness requirementof the ostomy appliance, provide the advantage of lowering theprotruding profile of the overall ostomy appliance. Alternatively, itmay provide the advantage of allowing additional internal space, forexample to accommodate tissue protruding from a stoma, or to accommodateother ostomy appliance elements.

In some embodiments of the invention, the lumen of adaptor 3508 containsa sealing element 3509, a secondary sealing-directed element with apotential role in primary sealing. Optionally, sealing element 3509 isattached to adaptor housing 3546 by welding or bonding (adhesive orchemical). Optionally, sealing element 3509 is molded onto adaptorhousing 3546 by over-molding or two-shot molding. Optionally, sealingelement 3509 may be made of a soft elastomer, for example siliconrubber, or a thermoplastic elastomer, for example SEBS. The durometer ofsealing element 3509 is, for example, between 5-20 Shore A.

In some embodiments of the invention, a cap surface 3562 is forced upagainst a sealing element 3509 of the adaptor when cap 3510 and adaptor3508 are fully coupled. Optionally, the parts of the locking mechanismmay be disposed so as to allow a degree of rotation sufficient to adjustthe resistance of the seal to the flow of gas, without the rotationallock being overcome. Optionally, sealing element 3509 may also providesecondary sealing by a pressing of its distal surface against surface ofan ostomy wafer (not shown) or the body of the user (not shown), andresisting the flow and/or leakage of waste.

The seal between cap surface 3562 and sealing element 3509 may providethe advantage of ensuring that waste entering the lumen of the adaptorcontinues through the aperture 3566 of the cap housing 3512 to pouch3514, instead of leaking to the exterior of the ostomy appliance. Aselective lowering in the resistance of the seal allows internal gassesto escape more quickly, which may provide an advantage, for example, toreduce user discomfort due to built-up pressure, or to preventself-release of the lid 3516. Because the gas flow resistance isselectable, flow of liquid and solid waste may be relatively restricted,or prevented. The use of a single sealing element 3509 to providesealing at both its distal and proximal ends may provide the advantageof a reduced cost by using an integral element for both functions. Theintegration of sealing element 3509 with the housing 3546 of the adaptor3508, for example by over-molding or two-shot molding during manufacturemay provide a further advantage of reduced cost.

Exemplary Embodiment of Adaptor with Rotary Slider

Reference is now also made to FIG. 3 which schematically illustrates anexploded perspective view of adaptor 108 and sealing element 109,according to an exemplary embodiment of the present invention. Inoverview, the rotary slider attachment mechanism shown illustrates, forexample, that use of a rotating motion to couple ostomy components maybe achieved by placing the rotating part on the more distal component ofthose being coupled. It also illustrates how tab restraint may beaugmented with a rotary motion.

Adaptor 108 includes a rotary slider 142, a fixation ring 144, and anadaptor body 146. Fixation ring 144 is shaped, for example withrecesses, to receive attachment elements of an overlying cap, forexample tab 3130. Rotary slider 142 is shaped, for example, with notchesto allow passage of tabs 3130 into fixation ring 144. Rotary slider 142serves as a cover which rotatably fits onto fixation ring 144 which isfixedly attached to adaptor body 146 on proximal end 120. In someembodiments, rotary slider 142, fixation element 144, and adaptor body146 mechanically resemble cover 108, fixation ring 110, and stomal cover102 disclosed in the aforementioned WO 2011/138727 by the applicant.Optionally, rotary slider 142, fixation element 144, and adaptor body146 functionally resemble the aforementioned cover 108, fixation ring110, and stomal cover 102 in WO 2011/138727. Sealing element 109 fitsinto cavity 140 through distal end 124. In some embodiments, fixationring 144 is an integral component of adaptor body 146.

Exemplary Ostomy Appliance and Gas Release Mechanisms

Exemplary Adaptor with Rotary Slider and Gas Release

Reference is now also made to FIG. 4A which schematically illustrates apartial-exploded perspective view of cap 110 and adaptor 108 in ostomyappliance 100 having an optional gas release mechanism, according tosome exemplary embodiments of the present invention. Reference is alsomade to FIGS. 4B and 4C which schematically illustrate sectional viewsof cap 110 fitted onto adaptor 108, the latter showing a gas flow path148 between the cap and the adaptor as part of a gas release mechanism,according to some exemplary embodiments of the present invention. InFIG. 4B, cap 110 seals cavity 140 for preventing waste contents and gasfrom escaping from stoma 104 (not shown in the figure) through adaptor108. In FIG. 4C, cap 110 is displaced away from cavity 140 for releasinggas while preventing waste content from leaking out from adaptor 108. Insome embodiments, adaptor body 146 in adaptor 108 includes a seal 150similar to seal 138 in the aforementioned document by the applicant.

In some exemplary embodiments, gas release through gas flow path 148 isperformed in a similar fashion as described in the aforementioned WO2011/138727 by the applicant. Optionally, a mechanical interaction ofcap 110, rotary slider 142, fixation ring 144, and adaptor body 146including seal 150 for opening gas flow path 148 is similar to that ofcap 106, cover 108, fixation ring 110, and stomal cover 102 includingseal 138 in the aforementioned document by the applicant.

Exemplary Low Profile Adaptor with Rotary Slider and Gas Release

Reference is made now to FIGS. 4D, 4E, and 4F, which schematicallyillustrate a low profile ostomy appliance adaptor in explodedperspective view (FIG. 4D), in cross section attached to an ostomy wafer(FIG. 4E), and in detailed cross section attached to a ostomy wafer(FIG. 4F), according to some embodiments of the invention.

In overview, these drawings illustrate, for example, how a rotary sliderlocated on the distal member of two coupled ostomy stack components maybe designed so that it contributes minimal additional height to theassembled ostomy stack. As will now be detailed for this embodiment, thelowered height is optionally achieved by putting the elements whichreceive the connecting elements of the ostomy cap (not shown) outsidethe perimeter of the connecting mechanism of the ostomy wafer. Thisallows them to be located closer to the body, without, for example,interfering with a protruding stoma, and/or with secondary sealing.

A potential advantage of this design relates to manufacturing cost,which may be lowered, compared, for example, to embodimentscorresponding to FIG. 3. The parts are compatible with a two-shotinjection manufacturing process, which reduces the need for moreexpensive manufacturing steps.

For the user, a potential advantage may arise from lowered cost itself.A lowered user cost may also open for a user possibility of morefrequent changing of device components. This can reduce the need forcleaning. Potentially, the user will also enjoy a higher sense ofhygiene.

In some embodiments of the invention, adaptor 3600 comprises an adaptorhousing 3646 coupled to a rotary slider 3612. Sealing element 3609 isfitted to adaptor housing 3646. Optionally, sealing element 3609 isattached to adaptor housing 3646, for example by chemical bonding orwelding. Optionally, sealing element 3609 is molded onto adaptor housing3646 by over-molding or two-shot molding. In some embodiments sealingelement 3609 is a secondary sealing-directed element with a potentialrole in primary sealing.

In some embodiments of the invention, rotary slider 3612 is attached toadaptor housing 3646 by means of tabs 3611 configured to interfere withrim 3613 of adaptor housing 3646, such that rotary slider 3612 canrotate around its axis but not move in the axial direction. In someembodiments, the height of all ostomy components together is no morethan 12 mm above the level of the wafer. In some embodiments, the heightof all ostomy components together is no more than 6 mm above the levelof the wafer. For many ostomates, this may be near to the minimal heightavailable, since a typical stoma rises between 5 mm and 10 mm above theskin.

In some embodiments of the invention, a cap (not shown) is attached toadaptor 3600, for example, in accordance with attachment elements,design, and principles described in connection to cap 110 and adaptor108, with suitable modifications. Optionally, gas release may beachieved by means similar to that described in connection to cap 110 andadaptor 108 in FIGS. 4A and 4B.

In some embodiments of the invention, adaptor housing 3646 is made ofrigid plastic, for example polyamide or polypropylene. In someembodiments of the invention, sealing element 3609 is made of softelastomer, for example silicone rubber. Optionally, sealing element 3609is made of thermoplastic elastomer, for example SEBS. The durometer ofthe sealing element is may be, for example, between 5-20 Shore A.

In some embodiments of the invention, adaptor housing 3646 attaches tothe wafer's flange 3615, for example by means of attachment tabs 3614that snap onto the flange's circumferential rim 3615.

In some embodiments of the invention, adaptor housing 3646 includesrecesses 3647 configured to accommodate fixation tabs, for example theattachment mechanism 3130 of cap housing 3146 (FIG. 2F). The recesses3647 are external to the wafer's attachment flange 3615, to removepotential interfering with tissue or secondary sealing within the ostomystack cavity.

In some embodiments of the invention, adaptor rim 3613 and recesses 3647are positioned externally to the wafer's flange 3615 lowering theprotruding profile of the adaptor 3600. Optionally, the number of tabsprovided is suited to stabilizing the corresponding increase in thediameter of the adaptor, for example 6 or 8 tabs, or more.

In some embodiments of the invention, sealing element 3609 includes oneor more bumps 3610A configured to press against wafer flange 3615 whenthe adaptor 3600 is attached to wafer 3602.

In some embodiments of the invention, sealing element 3609 includes oneor more bumps 3610B configured to press against a surface of aninstalled cap, for example, cap housing 3146.

In some embodiments of the invention, pressing bumps 3610A and 3610B onthe sealing adaptor 3609 provides the advantage of improved sealingforce.

Another Exemplary Ostomy Appliance with Gas Release Mechanism

Reference is now made to FIG. 5A which schematically illustrates aperspective view of an adaptor 208 and a removable cap 210 included inan ostomy appliance 200 having an optional gas release mechanism, and toFIG. 5B which schematically illustrates a sectional view of the ostomyappliance, according to some exemplary embodiments of the presentinvention.

In some exemplary embodiments, cap 210 includes a housing 212 with acollapsed pouch 214 and a removable lid 216. Optionally, lid 216 issimilar to lid 116. In some embodiments, cap 210 is a smart cap. In someembodiments, cap 210 additionally includes one or more tabs 211, forexample 4 tabs as shown, radially extending from a distal end of housing212. Tabs 211 are configured for locking cap 210 onto a fixation ring244 attached to adaptor body 146. Optionally, fixation ring 244 is anintegral component of adaptor body 146.

In some exemplary embodiments, fixation ring 244 includes one or morecap locking mechanisms 251 into which tabs 211 are inserted for lockingcap 210. Cap locking mechanism 251 includes a lock opening 252, a rim254, and a lock slot 256. Cap 210 is locked in fixation element 244 byinserting tab 211 through lock opening 252 until the tab abuts a ledge258 peripherally surrounding opening 122. Optionally, ledge 258 is anintegral component of fixation element 244. Alternatively, ledge 258 isa surface portion of adaptor body 146 peripherally surrounding opening122. Following abutment, cap 210 is rotated for sliding tab 211 under alock rim 254 until the tab engages lock slot 256. In some embodiments,lock rim 254 includes an inclined rim portion 260 for guiding tab 211through lock opening 252. In some embodiments, fixation ring 244includes a lock seal 262 peripherally surrounding ledge 258. Lock seal262, which may be an elastomeric seal, for example in the shape of agasket adapted to be compressed by cap 210 when tab 211 is inserted inlock slot 256, for providing sealing against waste content leakage andgas leakage. In some embodiments, partial rotation of cap 210 partiallyretrieves tab 211 from lock slot 256, reducing the compressive forceexerted on lock seal 262, and allowing a small gap to be opened suitablefor release of gas while preventing waste content leakage.

Reference is made to FIGS. 6A and 6B which schematically illustratesectional views of cap 110 fitted onto an adaptor 308, the lattershowing a gas flow path 148 through a gas filter 349 between the cap andthe adaptor as part of a gas release mechanism, according to someexemplary embodiments of the present invention.

In FIG. 6A, cap 110 seals cavity 140 for preventing waste contents andgas from escaping from stoma 104 (not shown in the figure) throughadaptor 108. In FIG. 6B, cap 110 is displaced away from cavity 140 forreleasing gas while preventing waste content from leaking out fromadaptor 108. In some embodiments, adaptor body 346 in adaptor 308includes a gas filter 349 for filtering gas flow through gas flow path148.

In some exemplary embodiments, a gas release mechanism described in WO2011/138727 by the applicant is used with gas flow path 148.

Another Exemplary Ostomy Appliance with Gas Release

Reference is now made to FIG. 7A which schematically illustrates aperspective view of an adaptor 408 having a flexible fixation ring 444for gas release in an ostomy appliance 400, and to FIG. 7B which shows afront view of the adaptor with the flexible fixation ring in a gasrelease mode, according to some exemplary embodiments of the invention.In some embodiments, a gas release mechanism described in theaforementioned WO 2011/138727 by the applicant is used with flexiblefixation ring 444. Flexible fixation ring 444 is configured for allowinga gas flow path 448 for gas release from within adaptor 408 when thefixation element is pressed, for example, as shown by the arrows marked“PRESS”. In some embodiments, flexible fixation ring 444 is a separatecomponent and attached to adaptor body 146. Alternatively, fixation ring444 is an integral component of adaptor body 146.

Another Exemplary Ostomy Appliance with Gas Release

Reference is now made to FIG. 8 which schematically illustrates asectional view of an adaptor 508 in an ostomy appliance 500 havingventilation port 564 for gas release, according to some exemplaryembodiments of the present invention.

In some exemplary embodiments, a ventilation lumen 566 extends fromventilation port 564 through adaptor body 546 to cavity 140. Ventilationlumen 566 is configured for conducting gases from cavity 140 toventilation port 566 where they are expelled from adaptor 508.Optionally, ventilation lumen 566 extends along an inner wall of adaptorbody 546 bordering cavity 140 and leads to stoma 104. Optionally oralternatively, ventilation lumen 566 includes a plurality of openingsfor reducing the possibility of lumen blockage due to accumulation ofwaste matter in the lumen's opening.

In some exemplary embodiments, ventilation lumen 566 includes a filter541 for filtering gases flowing through the ventilation lumen in adirection of ventilation port 564. Additionally or alternatively,ventilation port 564 is fitted with a valve 568 for allowing a user tocontrol gas release. In some embodiments, a gas release mechanismdescribed in FIG. 7 in the WO 2011/138727 by the applicant, is used withvalve 568 and filter 561.

Another Exemplary Ostomy Appliance with Gas Release

Reference is now made to FIG. 9 which schematically illustrates asectional view of an adaptor 608 having an external ventilation port 664for gas release in an ostomy appliance 600, according to some exemplaryembodiments of the present invention. Adaptor 608 includes a ventilationlumen 666 optionally mechanically and functionally similar toventilation lumen 566 in adaptor 508 shown in FIG. 8. Optionally,ventilation port 664 is configured for receiving a replaceable filter641 for filtering gases flowing through ventilation lumen 666 in adirection towards ventilation port 664. In some embodiments, the gasrelease mechanism described in FIG. 9 in WO 2011/138727 by theapplicant, is used with filter 641.

Exemplary Sealing Elements

Inflatable Sealing Element

Reference is now made to FIG. 10A which schematically illustrates anexploded perspective view of an adaptor 708 and an inflatable sealingelement 709 in an ostomy appliance 700, and to FIG. 10B whichschematically illustrates a sectional view of the adaptor with theinflatable sealing element inside cavity 140, according to someexemplary embodiments of the present invention. Optionally, inflatablesealing element 709 is a balloon, comprised of wall material capable ofstretching under the pressure of inflation, such as a siliconeelastomer. In some embodiments sealing element 709 is a secondarysealing-directed element with a potential role in primary sealing.

In some exemplary embodiments, balloon 709 may be configured for beinginflated for applying pressure to stoma 104 (not shown in the figure)for increasing the sealing at wafer/stoma interface 105 (not shown inthe figure). Additionally or alternatively, balloon 709 may beconfigured for applying pressure to wafer 102 (not shown in the figure)for increasing the sealing at wafer/stoma interface 105.

Increasing sealing at wafer/stoma interface 105 reduces possible leakagefrom adaptor 708 of waste content or of flushing liquid during flushing.Optionally, increased sealing at wafer/stoma interface provides a doublesealing arrangement reducing and/or eliminating a pressure of wastecontent and/or flushing fluid at adaptor/wafer interface 103 (not shownin figure).

Optionally, a direction in which the pressure is applied by balloon 709is predetermined during manufacture of the balloon and may involveadjusting balloon wall thickness, for example, by reducing thickness inportions of the wall, and/or by reinforcing portions of the wall.Additionally or alternatively, the direction of applied pressure may bepredetermined by adjusting the material properties of the wall, such asthe elasticity; for example by lamination of some portions with a lesselastic reinforcing material. Materials which may be used to reinforceportions of the balloon wall may include fabric or polymeric mesh.

A potential advantage of controlling a direction of pressure applicationallows for enhancing ostomy appliance 700 sealing against wafer 102 andagainst stoma 104. An additional potential advantage of said directioncontrolling is that a single device can potentially accommodate stomasof various diameters by controlling the extent to which balloon 709extends in a direction towards stoma 104 during inflation.

Reference is now also made to FIGS. 10C and 10D which schematically showside views of balloon 709 applying pressure in different directions,according to some exemplary embodiments of the invention. In FIG. 10C,balloon 709 is shown applying a pressure P1 in an axial directionpressing against wafer 102 increasing the sealing at wafer/stomainterface 105. In FIG. 10D, balloon 709 is shown applying a pressure P2in a negative radial direction into cavity 140 pressing against stoma104 increasing the sealing at wafer/stoma interface 105. Optionally, thepressure P1 and/or P2 may range from 5-40 mmHg, for example, 6 mmHg, 10mmHg, 15 mmHg, 25 mmHg, 32 mmHg. In some embodiments, adaptor 708 withballoon 709 configured for pressing in the negative radial direction isusable with wafers 102 having wafer ports 118 and/or pouch attachmentelements 132 (wafer, wafer port, and pouch attachment element, not shownin the figure) of varying sizes.

Adaptor 708 includes an inflation port 764 in adaptor body 746 and aninflation valve 768 adapted to be accommodated in the inflation port. Aninflation lumen 766 extends from inflation port 764 through adaptor body746 in a direction to cavity 140 and connects with balloon 709.Inflation and deflation of balloon 709 is through inflation valve 768which regulates a direction of air flow through inflation lumen 766.

In some exemplary embodiments, balloon 709 may be an integral componentof adaptor 708 and is formed (manufactured) together with the adaptor.Alternatively, balloon 709 is a separate component formed independentlyof adaptor 708 and assembled into cavity 140 at a later stage ofproduction.

Exemplary Compressible Sealing Element

Reference is now made to FIG. 11 which schematically illustrates asectional view of an adaptor 808 with a compressible sealing element 809in an ostomy appliance 800, according to some exemplary embodiments ofthe present invention.

In some exemplary embodiments, sealing element 809 is configured forpressing against a proximal surface of wafer 102 (not shown in thefigure) when adaptor 808 is attached to wafer 102, preventing leakage ofwaste matter and/or flushing fluid through wafer/stoma interface 105(not shown in the figure). Optionally, sealing element 809 acts as aredundant sealing mechanism to that at wafer/adaptor interface 103 (notshown in figure). Optionally, sealing element 809 is compressiblyaccommodated inside cavity 140 and is configured for pressing against aperipheral inner wall 141 in the cavity. A potential advantage of thecompressive fit inside cavity 140 is preventing waste content fromcoming in contact with inner wall 141 for facilitating cleaning ofadaptor 808. Optionally or alternatively, sealing element 809 ispermanently attached to inner wall 141 for example by means of bondingor welding. Optionally, sealing element 809 is further configured forpressing against wafer 102 (not shown in the figure) for enhancingsealing around stoma 104 at wafer/stoma interface 105 (not shown in thefigure). In some embodiments, sealing element 809 pressing against wafer102 allows for sealing to be maintained at wafer/stoma interface 105during natural flexing of the wafer.

In some exemplary embodiments, sealing element 809 includes a foammaterial, optionally permeable or semi-permeable to gases. Optionally,sealing element 809 is enclosed in a casing 811 which may also bepermeable to gases. Optionally, sealing element 809 may includematerials, for example charcoal, which may allow the sealing element tobe used as a gas filter for filtering flatus passing from stoma 104,optionally through wafer port 118, into adaptor 808 (stoma and waferport are not shown in the figure). In some embodiments, sealing element809 absorbs odors from flatus, and/or includes a deodorizing agent fordeodorizing the flatus. In some embodiments, adaptor 808 includes one ormore external ventilation ports 864 and one or more ventilation lumens866 extending from the ventilation port through adaptor body 846 towardscavity 140. Gas passing through sealing element 809 may flow throughventilation lumen 866 and out ventilation port 864. In some embodiments,the foam material in sealing element 809 is configured for absorbingliquid waste content. In some embodiments, an amount of liquid wastecontent absorbable by sealing element 809 is up to 100 ml, for example,1 ml, 5 ml, 10 ml, 20 ml, 35 ml, 45 ml, 50 ml, 60 ml, 75 ml, 85 ml, 90ml, 95 ml. Optionally, sealing element 809 may absorb amounts of liquidwaste content in excess of 100 ml, for example, 120 ml, 150 ml, 180 ml,200 ml, or more.

Exemplary Disposable Plug Sealing Element

Reference is now made to FIG. 12 which schematically illustrates asectional view of ostomy appliance 100 attached to wafer 102 coveringstoma 104 and having adaptor 108 with a plug 170, according to someembodiments of the present invention. Plug 170 is sized and shaped to befittingly accommodated within cavity 140, and is adapted to seal stoma104. Optionally, plug 170 includes a distal end 172 shaped to conform tothe shape of stoma 104. Optionally, plug 170 or distal end 172 is madeof a pliable material adapted to self-conform to the shape of stoma 104.In some embodiments, plug 170 and/or distal end 172 is partially orwholly containable inside stoma 104.

In some exemplary embodiments, plug 170 may be a disposable plug whichis disposed of together with pouch 114. For example, plug 170 may bepushed into pouch 114 by the pressure of the waste content flowing intothe pouch. Additionally or alternatively, plug 170 may be attached tocap 110 so that removal of the cap or of lid 116 pulls the plug awayfrom stoma 104 for allowing waste content flow into the pouch.Optionally, plug 170 is extracted from ostomy appliance 100 by removalof cap 110 or lid 116. In some embodiments, plugs 170 is attached topouch 114 so that deployment of the pouch removes the plug from stoma104 and extracts the plug from ostomy device 100. In some embodiments,plug 170 is attached to cap 110, lid 116, or pouch 114 by a string,cable, or other attachment element suitable for pulling on the plug.

In some exemplary embodiments, plug 170 may include a non-fluidabsorbing solid elastomeric material such as, for example, siliconerubber. Alternatively, plug 170 may include a foam material which isnon-fluid absorbing, or alternatively, fluid absorbing for absorbingliquid waste content flowing from stoma. 104. Optionally, plug 170 maybe adapted to distend when liquid waste content is absorbed. In someembodiments, an amount of liquid waste content absorbable by plug 170 isup to 100 ml, for example, 1 ml, 5 ml, 10 ml, 20 ml, 35 ml, 45 ml, 50ml, 60 ml, 75 ml, 85 ml, 90 ml, 95 ml. Optionally, plug 170 may absorbamounts of liquid waste content in excess of 100 ml, for example, 120ml, 150 ml, 180 ml, 200 ml, or more.

Exemplary Absorbing Pad Sealing Element

Reference is now made to FIG. 13 which schematically illustrates asectional view of ostomy appliance 100 attached to wafer 102 coveringstoma 104 and having adaptor 108 with an absorbing pad 174, according tosome embodiments of the present invention. In some embodiments, pad 174is a secondary sealing-directed element with a potential role in primarysealing. Absorbing pad 174 may be fitted inside cavity 140 between stoma104 and pouch 114, and is adapted to absorb liquid waste content therebyreducing possible leakage of liquid waste content from adaptor 108.Optionally, absorbing pad 174 peripherally surrounds stoma 104. In someembodiments, an amount of liquid waste content absorbable by absorbingpad 174 is up to 100 ml, for example, 1 ml, 5 ml, 10 ml, 20 ml, 35 ml,45 ml, 50 ml, 60 ml, 75 ml, 85 ml, 90 ml, 95 ml. Optionally, absorbingpad 174 may absorb amounts of liquid waste content in excess of 100 ml,for example, 120 ml, 150 ml, 180 ml, 200 ml, or more. Liquid wastecontent absorption by absorbing pad 174 potentially reduces the sealingrequirements of sealing element 109 and/or at wafer/adaptor interface103. Additionally or alternatively, absorbing pad 174 may serve toreduce an amount of liquid waste content required to be handled atwafer/stoma interface 105 and/or wafer/adaptor interface 103. In someembodiments, liquid waste absorption by absorbing pad 174 potentiallyfacilitates cleaning of adaptor 108.

In some exemplary embodiments, absorbing pad 174 may be a disposable padwhich is disposed of together with pouch 114. For example, absorbing pad174 may be pushed into pouch 114 by the pressure of the waste contentflowing into the pouch. Additionally or alternatively, absorbing pad 174may be attached to cap 110 so that removal of the cap or of lid 116pulls the pad away from stoma 104. Optionally, absorbing pad 174 isextracted from ostomy appliance 100 by removal of cap 110 or lid 116. Insome embodiments, absorbing pad 174 is attached to pouch 114 so thatdeployment of the pouch removes the pad from stoma 104 and extracts thepad from ostomy device 100. In some embodiments, absorbing pad 174 isattached to cap 110, lid 116, or pouch 114 by a string, cable, or otherattachment element suitable for pulling on the pad.

In some exemplary embodiments, absorbing pad 174 is made of a relativelyhighly liquid absorbing material such as, for example, cotton,cellulose, or other material from the group of materials known assuper-absorbent polymers, or any combination thereof.

In some exemplary embodiments, absorbing pad 174 is annular in shape,and has a round cross-section, for example as in an O-ring, forperipherally surrounding a circular stoma at wafer/stoma interface 105.Optionally, the cross-sectional shape of absorbing pad 174 conforms tothe shape of sealing element 109 at wafer/stoma interface 105.Additionally or alternatively, absorbing pad conforms to the shape ofcavity 140. In some embodiments, absorbing pad 170 has a non-circularcross-sectional shape conforming to the shape of sealing element 109 atwafer/stoma interface 105, to the shape of stoma 104, and/or to theshape of cavity 140. In some embodiments, adaptor 108 is fitted with adifferently shaped absorbing pad, for example, a disc shape absorbingpad 176 as shown in FIG. 14. In some embodiments, the absorbing pad isaccommodated in cap 110 inside housing 112, for example as shown byabsorbing pad 176 in FIG. 15 positioned between pouch 114 and a distalopening 111 in the cap. Alternatively, other absorbing pads may be usedinside housing 112, for example absorbing pad 174.

Exemplary Flushing Mechanism

Flushing-Type Sealing Element with Internal Fluid Distribution

Reference is now made to FIGS. 16A and 16B which schematicallyillustrate perspective views of an adaptor 908 having a flushing-typesealing element 909 in an ostomy appliance 900, and to FIG. 16C whichschematically illustrates a sectional view of the adaptor with thesealing element, according to some exemplary embodiments of the presentinvention. In some embodiments sealing element 909 is a secondarysealing-directed element with a potential role in primary sealing.Adaptor 908 including sealing element 909 are configured for introducinga fluid into an internal portion of adaptor 908. Optionally, said fluidcan be introduced into stoma 104 (not shown in the figures), for examplefor intestinal irrigation. In some embodiments, the flushing fluid isused for easing flow of waste matter through adaptor 908 into the pouch,for washing the stoma, for washing the peristomal skin, for washing theinterior of the adaptor, for irrigating an interior of the intestine, orany combination thereof. In some embodiments, flushing is performedwithout sealing element 909 by introducing the flushing fluid intocavity 140 and therefrom to the stoma and other areas.

In some exemplary embodiments, adaptor body 946 includes a flushing port964 through which the flushing fluid may be injected, or otherwiseadministered, into adaptor 908. A flushing lumen 966 extends fromflushing port 964 through adaptor body 946 in a direction towards cavity140, connecting to a feeder port 965 in an outer wall 911 of sealingelement 909. A feeder lumen 967 inside sealing element 909 extends fromfeeder port 965 to one or more distribution lumens 969, for example fourdistribution lumens, peripherally extending along at least a portion ofthe sealing element. One or more flushing openings 971, for example, 64openings, are spaced along an inner wall 913 of sealing element 909 andare fluidly connected to distribution lumens 969. Optionally, a numberof distribution lumens 969 and/or a number of flushing openings 971included in sealing element 909 varies with a particular flushingapplication. Optionally, a design including location, size, and/or shapeof distribution lumens 969 and/or flushing openings 971 in sealingelement 909 vary with the application. For example, a sealing elementused only for irrigation of the stoma may be different than a sealingelement also used for washing the interior of the adaptor and/or washingthe stoma and/or the peristomal skin.

An exemplary method of performing flushing, according to someembodiments, includes the user introducing the flushing fluid throughflushing port 964 into flushing lumen 966. Optionally, a volume of theflushing fluid may range from 20 ml-1000 ml, or more, for example, 50ml, 80 ml, 150 ml, 250 ml, 350 ml, 500 ml, 700 ml, 850 ml, 950 ml, 1100ml, 1200 ml, 1500 ml. Fluid flow through flushing lumen 966 entersthrough feeder port 965 into feeder lumen 967, and therefrom intodistribution lumens 969. The flushing fluid flowing through distributionlumens 969 exits through flushing openings 971 and flows therefrom intocavity 140 and other areas to be flushed.

In some exemplary embodiments, sealing element 909 may include a slotperipherally extending along outer wall 911 and positioned such that,regardless how the sealing element is positioned inside cavity 140, theslot is always aligned with flushing lumen 966 so that the flushingfluid flowing through the flushing lumen enters into the slot. Extendingfrom the slot may be one or more feeder lumens 967, for example 2, 4, 7,10, or more feeder lumens which are fluidly connect with one or moredistribution lumens 969 and into which the flushing fluid from the slotflows.

In some exemplary embodiments, distribution lumens 969 and flushingopenings 971 are sized and positioned in sealing element 909 forobtaining fluid flow in a predetermined location and/or direction. Insome embodiments, flushing openings 971 are made of a relatively smallsize for allowing fluid flow out the openings and substantiallypreventing fluid flow back into the openings. In this manner, flushingopenings 971 act as one-way valves, or flutter valves, and preventpossible outflow of waste content through the flushing system.Optionally, fluid flow out of flushing openings 971 may be at a pressureof up to 300 mm/Hg, for example 100 mm/Hg, 150 mm/Hg, 200 mm/Hg, 250mm/Hg. In some exemplary embodiments, flushing port 964 may be closed bya flushing plug 968. Flushing plug 968 may serve to prevent outflow offlushing fluid administered into adaptor 908. Optionally, flushing plug968 prevents outflow of gases or waste matter from within adaptor 908through the flushing system. In some embodiments, a one-way valve (notshown) is included in flushing lumen 966.

Exemplary Flushing-Type Sealing Element with External Fluid Distribution

Reference is now made to FIG. 17A which schematically illustrates aperspective view of a flushing-type sealing element 909′, and to FIG.17B which schematically illustrates a sectional view of adaptor 908 withthe sealing element inside cavity 140, according to some exemplaryembodiments of the present invention.

In some exemplary embodiments, sealing element 909 includes a feederchannel 967′ circumferentially extending along outer wall 911′ andconnecting to one or more inlet slots 969′. Inlet slots 969′ extend fromfeeder channel 967′ along a proximal side 915′ of sealing element 909′in a direction towards an inner wall 913′ and terminate at flushingopenings 971′ proximal to inner wall 913′. In some embodiments, flushingopenings 971′ include reduced-size slots which allow fluid flow in adirection into cavity 140 while preventing backflow up into inlet slots969′ (functionally similar to a flutter valve).

An exemplary method of performing flushing, according to someembodiments, includes the user introducing the flushing fluid throughflushing port 964 into flushing lumen 966. Fluid flow through flushinglumen 966 enters into feeder slot 967′ and therefrom into inlet slot969′. The flushing fluid flowing through inlet slots 969′ exit throughflushing openings 971′ and flow therefrom into cavity 140 and otherareas to be flushed.

In some exemplary embodiments, openings 971′ are located on inner wall913′. Alternatively, gaps 972′ are left between openings 971′ and innerwall 913′, such that inlet slots 969′ are normally not in fluidcommunication with cavity 140. In the later configuration, backflow ofgases or waste matter from cavity 140 into slots 969′ is eliminatedwhile inflow of flushing fluid from slots 969′ into cavity 140 ispossible, through a check-valve mechanism known in the art as a “fluttervalve” or a “duckbill valve” When a pressurized fluid is present ininlet slots 969′, its pressure acts on gaps 972′ and forces them toshift in the distal direction thus enabling the fluid to flow intocavity 140. When a pressurized fluid is present in cavity 140, itspressure acts on inner wall 913′. As a result gaps 972′ are tightenedonto the adaptor's body, thus flow of fluid from cavity 140 into inletslots 969′ is eliminated.

Exemplary Flushing-Type Sealing Element with Flushing Tube

Reference is now made to FIG. 18 which schematically illustrates asection of adaptor 908 including a flushing-type sealing element 909″ inostomy appliance 900, according to some exemplary embodiments of thepresent invention. Sealing element 909″ includes a feeder lumen 967″extending from an outer wall 911″ to an inner wall 913″ in the sealingelement, having a feeder port 965 on the outer wall, and an outlet port975 on the inner wall. Outlet port 975 is configured for attaching aflushing tube 977 which may be inserted into stoma 104 (not shown in thefigure) for intestinal flushing or irrigation.

Exemplary Integrated-Component Ostomy Appliances

Exemplary Integrated-Component Cap/Adaptor

Reference is now made to FIG. 19 which schematically illustrates asectional view of an integral ostomy appliance 1000 for attaching towafer 102, according to some exemplary embodiments of the presentinvention. FIG. 19 illustrates an embodiment where a cap and an adaptorare integrally formed.

In some exemplary embodiments, integral ostomy appliance 1000 includesan adaptor 1008 having a housing 1012 accommodating collapsed pouch 114,and removable lid 116. In some embodiments, lid 116 removal and pouch114 deployment use mechanisms earlier described for ostomy appliance100. Optionally, integral ostomy appliance 1000 includes sealing element109. Integral ostomy appliance 1000 includes attachment mechanism 130which mates with pouch attachment element 132 for attaching the ostomyappliance to wafer 102. In some embodiments, integral ostomy appliance1000 includes any one feature, or combination of features, previouslydisclosed herein in some exemplary embodiments of the ostomy appliance.In some embodiments, integral ostomy appliance 1000 is disposed offollowing deployment of pouch 114. Alternatively, housing 1012 includingdeployed pouch 114 is replaced by a new housing 1012 with a collapsedpouch 114.

Exemplary Integral-Component Adaptor/Wafer

Reference is now made to FIG. 20 which schematically illustrates asectional view of an ostomy appliance 1100 including an integraladaptor/wafer 1108, according to some exemplary embodiments of thepresent invention. FIG. 20 illustrates an embodiment where a wafer andan adaptor are integrally formed.

Adaptor/wafer 1108 includes an adaptor body 1146 and wafer 1102integrally manufactured as a single component. Alternatively, adaptorbody 1146 and wafer 1102 are separately manufactured as two componentsand are joined together through methods known in the art which mayinclude, for example, bonding or welding.

In some exemplary embodiments, adaptor/wafer 1108 is adapted toaccommodate cap 110. Alternatively, adaptor/wafer 1108 is adapted toaccommodate cap 210. In some embodiments, adaptor/wafer 1108 includessealing element 109. In some embodiments, sealing element 109 isseparately attachable to the adaptor/wafer. Alternatively, sealingelement 109 may be formed integrally with adaptor/wafer 1108. In someembodiments, ostomy appliance 1100 includes any one feature, orcombination of features, previously disclosed herein in some exemplaryembodiments of the ostomy appliance. In some embodiments, adaptor/wafer1108 is disposed of following a predetermined period of time, or apredetermined number of pouch deployments, or as required by the user.

Exemplary Integral-Component Cap/Wafer/Adaptor

Reference is now made to FIG. 21 which schematically illustrates asectional view of an integral ostomy appliance 1200 including acollapsed pouch 114, a wafer 1202, and a lid 116, according to someexemplary embodiments of the present invention. Ostomy appliance 1200includes an adaptor body 1246 having a housing 1212 and a wafer 1202integrally manufactured as a single component. Alternatively, adaptorbody 1246 including housing 1212 and wafer 1202 are separatelymanufactured as two or more components and are joined together, forexample, through methods known in the art which may include, forexample, bonding (chemical or adhesive) or welding. Lid 116 andcollapsed pouch 114 are separately included in ostomy appliance 1200. Insome embodiments, ostomy appliance 1200 includes any one feature, orcombination of features, previously disclosed herein in some exemplaryembodiments of the ostomy appliance.

In some embodiments, ostomy appliance 1200 is disposed of following apredetermined period of time, or a predetermined number of pouchdeployments, or as required by the user. Optionally, housing 1212including deployed pouch 114 is replaced by a new housing 1212 with acollapsed pouch 114. A potential advantage in replacing only housing1212 with pouch 114 includes minimum handling by the user of the ostomyappliance and reduced storage space required in handbags and briefcasesas only the housing is required.

Exemplary Integrated Lid/Adaptor

Reference is now made to FIG. 22A which schematically illustrates aperspective view of adaptor 208 shown in FIGS. 5A and 5B including anintegrated lid 210′, and to FIG. 22B which schematically illustrates asectional view of the adaptor and the integrated lid, according to someexemplary embodiments of the present invention. Integrated lid 210′ isfastened to adaptor 208, for example by means of a hinge, which may be aflexible tab or a hinged pin arrangement or a cable or other suitableattachment means, and is adapted to cover proximal opening 122.

In some embodiments, lid 210′ serves as a pressure sensing cap forindicating to the user a need to evacuate. Optionally, lid 210′ isadapted for use with some embodiments of cap 210 not configured with apressure warning mechanism. In this configuration, cap 210 is insertedinto the proximal opening and attached to adaptor 208, and lid 210′ isclosed over cap 210 and secured against adaptor body 244.

In some exemplary embodiments, integrated lid 210′ may be used forpreventing undesired deployment of collapsed bag 114. In someembodiments, integral lid 210′ seals proximal opening 122 for preventingwaste content from flowing or leaking out the proximal opening whenclosed over the proximal opening.

In some exemplary embodiments, adaptor 208 includes a fasteningmechanism including a first mating element 264 on adaptor body 244 and asecond mating element 266 on lid 210′ for securing the cap against theadaptor body. Optionally, first mating element 264 and/or second matingelement 266 are pressure activated by the user for securing lid 210′against adaptor body 244 and/or for releasing the cap from the body.

Exemplary Integral-Component Cap/Wafer Assembly

Reference is now made to FIGS. 22C and 22D which schematicallyillustrate perspective views of, respectively, an exploded and anassembled integral ostomy stack 3400 including a wafer 3402, an adaptor3446, a collapsed pouch 3414, and a lid 3416, according to someexemplary embodiments of the present invention. The exemplary ostomystack 3400 encompasses the functions of wafer, adaptor and cap in asingle integrated component, and illustrates how such a stack mayinclude a lidded, flat-folded pouch and an aperture-held filter to addwaste release control functionality while maintaining a minimal stackheight.

In some embodiments the ostomy component stack 3400 is especiallydesigned for brief and/or active use. By making the stack as low aspossible, a fuller advantage can be taken of flexible materials,providing a more conforming ostomy appliance. As long as a short periodof wearing is intended, even some pressing of the stoma may betolerated, in exchange for a lowered profile. In embodiments where thewearing period is brief, the pouch is provided primarily as a backup incase deployment becomes suddenly necessary. In such embodiments, theadhesive may be weaker, since it does not need to support the fullweight of a filled waste collection pouch.

The ostomy wafer 3402 is integrally attached to ostomy adaptor 3446.Ostomy adaptor 3446 includes an attachment element 3432 which isoptionally a flange.

Optionally, the diameter of ostomy wafer port 3422 may be chosen to suitthe diameter of the stoma. Optionally, the portion of the pad 3404 ofthe ostomy wafer peripherally enclosed within the lumen of the adaptor3446 may be constructed so that a suitably-sized wafer port may be cutfrom it before use.

A waste-receiving aperture of the collapsed pouch 3414 is attached, forexample by chemical bonding or welding, so that it is in fluidcommunication with the lumen of adaptor 3446. In some embodiments, thepouch 3414 is folded into a flattened package which is contained by lid3416 when it is attached to attachment element 3432.

In some embodiments, a pull-tab 3417 is provided on lid 3416, whichprotrudes from the lid. Optionally, the pull-tab protrudes laterally.Optionally, the pull-tab is large enough to be comfortably gripped withthe fingers. Optionally, the pull-tab is of a material sufficientlyflexible that a gripping appendage, for example a finger, can beinserted behind it. The pull-tab 3416 may be advantageous in removinglid 3417, which allows the expansion of waste pouch 3414, due, forexample, to filling by waste.

In some embodiments, a pull-tab 3419 is provided on ostomy wafer 3402,which protrudes from the wafer, and is optionally constructed as aprotrusion of pad 3404.

Optionally, the pull-tab is not adhered to the underlying skin.Optionally, the pull-tab protrudes laterally. Optionally, the pull-tabis large enough to be comfortably gripped with the fingers. Optionally,the pull-tab is of a material sufficiently flexible that a grippingappendage can be inserted behind it. The pull-tab 3419 is advantageouslyused to remove ostomy wafer 3402, in order, for example, to exchange anold wafer with a replacement.

In some embodiments, a filter 3449 is provided, disposed within theostomy appliance so as to permit gasses to escape through it from withinthe ostomy appliance. Optionally, adaptor 3446 is provided with anaperture 3450 which contains the filter 3449.

Optionally, ostomy wafer 3402, ostomy adaptor 3446 and lid 3416 areformed from a flexible and/or elastic material, for example siliconerubber or TPE, or a semi-rigid material such as, for example,polyethylene. Forming of said components from a flexible and/or elasticor semi-rigid material may provide an advantage by enabling the ostomystack to conform to body movements and/or skin folds while occludingeffluents emanating from the stoma.

Exemplary Methods of Using an Ostomy Appliance

Exemplary Method of Covering a Stoma Using Ostomy Appliance

Reference is now made to FIG. 23 which is a flow chart of a method ofcovering a stoma with an ostomy appliance, according to an exemplaryembodiment of the present invention. In describing the method drawingreferences are made to the various combinations of separate andintegrated ostomy components and appliances described herein.

At 2301, the user determines whether the ostomy appliance to be usedincludes an integral adaptor/wafer.

If so, the user further determines at 2302 whether or not the ostomyappliance includes an integral cap/adaptor, and if so attaches theintegrated appliance (corresponding, for example, to 3400) over thestoma 2303, finishing the task. If not, the user proceeds with attachingthe integral adaptor/wafer 1102, 1108 over the stoma 2304, and continueswith 2309 as described below.

From a negative determination at 2301, the user proceeds to attach thewafer (for example, 102) over stoma 2305. The user then determines ifthe ostomy appliance includes an integrated cap/adaptor 2306. If so, theuser attaches an integral cap/adaptor 1008 to the wafer 2307, and thetask is finished. If not, the user attaches an adaptor 108 to the wafer2308, and continues with 2309.

At 2309, the user determines if the adaptor includes an integrated lid116. If it does, the user attaches a housing 112 with a collapsed pouch114 to the adaptor 2310, and closes the lid 116 over the housing 2311.If not, the user attaches a cap 110 to the adaptor 2312. In either case,the task is finished.

Method of Using the Ostomy Appliance

Reference is now made to FIG. 24 which is a flow chart of a method ofusing a smart cap with an ostomy appliance, according to an exemplaryembodiment of the present invention. In describing the method, referenceis made herein to one or more of the exemplary embodiments of the ostomyappliance previously described.

At 2401, the user, during the course of the day, senses pressure fromwaste content which requires evacuation. Optionally, the pressure issensed through a sensing lid 116 on cap 110 protruding in a proximaldirection and/or through other pressure sensing features which may beavailable in the smart cap.

At 2402, optionally, in response to the sensed pressure the userslightly releases cap 110 from adaptor 108 opening a gas flow path 148between proximal end 120 in the adaptor and the cap. Alternatively, theuser activates other gas releasing mechanisms in adaptor 108, forexample, by pressing a gas release valve 568 in an adaptor 508, or bypressing on a flexible fixation ring 444 on adaptor 408. In someembodiments, gas filter and/or deodorizing is performed, for example, bygas filter 349 in adaptor 308, or gas filter 541 in adaptor 508, or bysealing element 809 used with adaptor 808.

At 2403, the user determines if there is waste content to release. Ifno, the method returns to stage 2401. If yes, the method continues tostage 2404.

At 2404, the user removes lid 116. Manually removing the lid may be doneat a time and place chosen by the user, for example in the privacy of asanitary facility. Alternatively, lid is automatically ejected by safetyrelease mechanism or other pressure-activated release mechanism.

At 2405 the ostomy bag is automatically deployed by the axial pressurefrom the waste content pushing on collapsed pouch 114, allowing thewaste content to flow into the pouch. Alternatively, the user deployscollapsed pouch 114 using a strap or cord attached to the pouch, or anyother method suitable for deployment of the bag.

At 2406, the user, having finished evacuation disposes of the deployedostomy pouch 114 and waste content. Optionally, the user releases cap110 including deployed pouch 114 from adaptor 108 for disposing thepouch.

At 2407, the user optionally determines if either ostomy wafer 102 oradaptor 508 requires replacement. If no, the method continues to stage2409. If yes, the method continues to stage 2408.

At 2408, the user optionally detaches adaptor 108 from wafer 102 fordisposing of the adaptor. Optionally the user removes the wafer fordisposing of the wafer. Optionally, a new wafer 102 is placed over stoma104 and adaptor 108 reattached to the new wafer. Alternatively a newadaptor 108 is attached to the wafer. Alternatively, adaptor 108 isattached to new wafer 102 before being placed over stoma 104. In someembodiments, the user removes wafer 102 together with adaptor 108 andthen detaches the adaptor. In some embodiments, wafer 1102 and adaptor1108 are integrally attached and removed together. Optionally, wafer1102 and adaptor 1108 are replaced by a new adaptor, wafer, and/orintegral wafer and adaptor. Wafer and/or adaptor are then reattached.

At 2409, the user reattaches a new cap 110 having a new collapsed pouch114 to proximal end 120 of adaptor 108. Alternatively, the userreattaches removed cap 110 following accommodating a new collapsed pouch114 in the cap. In some embodiments, stage 2409 is included in stage2408 with new cap 110 coupled to adaptor 108 prior to coupling to wafer102 or to placing over stoma 104.

At 2410, the user attaches lid 116 to cap 110. Optionally, sensing lid116 is that previously used. Alternatively, new cap in 2409 includes anew lid 116.

At 2411, the user, during the course of the day, may require flushing ofadaptor 108. Optionally, flushing may include washing the interior ofadaptor 108, the stoma, the peristomal skin, intestinal irrigation, orany combination thereof. If flushing is required continue to stage 2412.If flushing is not required, go to stage 2401.

At 2412, the user connects a flushing fluid source to the adaptor, forexample, through a flushing port 964 in adaptor 908. Optionally, theuser first opens a plug 968 on flushing port 964 prior to connecting theflushing fluid source, which may be, for example, a bag or syringe ofsaline solution, to the flushing port. In some embodiments, the flushingfluid flows into the interior of adaptor 108 through flushing lumen 966in the adaptor which is in fluid communication with the sealing element,for example, sealing element 909 or 909′. Optionally, the flushing fluidflows out from sealing element 909 or 909′ into the interior of adaptor908, washing the adaptor's interior, the stoma, the peristomal skin, orirrigating the intestine, or any combination thereof. Additionally oralternatively, a flushing tube 977 leading into the intestine may beconnected to the sealing element, for example, sealing element 909″, forirrigating the intestine.

In some embodiments, the flushing fluid source is connected, forexample, by pressure fitting or threading, to a dedicated inlet in thecap. Optionally, the user first detaches the regular cap from theadaptor, then attaches a new cap adapted for connecting a flushing fluidsource. Optionally, said adapted cap includes a high-capacity pouchadapted to receive waste and flushing fluid.

In some embodiments, during the flushing the user removes lid 116 fordeploying pouch 114 for allowing the flushing fluid to flow into thepouch together with waste residue (stages 2404 and 2405). Optionally,the user deploys pouch 114 prior to applying the flushing fluid.Alternatively, the user deploys pouch 114 after applying the flushingfluid. Optionally, the user allows the fluid to remain inside the bowelfor some time, and only then remove lid 116 and deploy pouch 114 toallow bowel content flush out.

The Ostomy Appliance In Situ

Reference is now made to FIGS. 25, 26, and 27, which are pictures of anexemplary ostomy appliance as it is worn on the body during use.

In FIG. 25, the abdomen of a user 3600 is shown with a partiallyassembled ostomy stack in place. An ostomy wafer 3620 (adherent surfaceof the ostomy wafer is indicated) is further secured into place by anostomy belt 3605. An adaptor 3610 is attached over the wafer. The lumenof the adaptor 3615 is in fluid communication with the open stomaunderneath.

In FIG. 26, a cap 3625 comprised of a housing, pouch, and lid has beenattached over the adaptor 3610.

In FIG. 27, the lid has been removed from the cap 3625, allowing thepouch 3630 to unfold from its stored position. The lumen 3615 leading tothe stoma is discernible through the translucent material of thedeployed pouch.

Block Diagram of an Ostomy Appliance

Reference is now made to FIG. 28 which is a block diagram of ostomyappliance 100 and some of its components, according to some exemplaryembodiments of the present invention. In some embodiments, ostomyappliance 100 includes any one component, or combination of components,disclosed herein for the ostomy appliance. Additionally oralternatively, ostomy appliance 100 includes any one component orcombination of components disclosed herein in other exemplaryembodiments of the ostomy appliance. In some embodiments, ostomyappliance 100 includes integrally formed components.

The terms “comprises”, “comprising”, “includes”, “including”, “having”and their conjugates mean “including but not limited to”.

Throughout this application, various embodiments of this invention maybe presented in a range format. It should be understood that thedescription in range format is merely for convenience and brevity andshould not be construed as an inflexible limitation on the scope of theinvention. Accordingly, the description of a range should be consideredto have specifically disclosed all the possible subranges as well asindividual numerical values within that range. For example, descriptionof a range such as from 1 to 6 should be considered to have specificallydisclosed subranges such as from 1 to 3, from 1 to 4, from 1 to 5, from2 to 4, from 2 to 6, from 3 to 6 etc., as well as individual numberswithin that range, for example, 1, 2, 3, 4, 5, and 6. This appliesregardless of the breadth of the range.

Whenever a numerical range is indicated herein, it is meant to includeany cited numeral (fractional or integral) within the indicated range.The phrases “ranging/ranges between” a first indicate number and asecond indicate number and “ranging/ranges from” a first indicate number“to” a second indicate number are used herein interchangeably and aremeant to include the first and second indicated numbers and all thefractional and integral numerals therebetween.

It is appreciated that certain features of the invention, which are, forclarity, described in the context of separate embodiments, may also beprovided in combination in a single embodiment. Conversely, variousfeatures of the invention, which are, for brevity, described in thecontext of a single embodiment, may also be provided separately or inany suitable subcombination or as suitable in any other describedembodiment of the invention. Certain features described in the contextof various embodiments are not to be considered essential features ofthose embodiments, unless the embodiment is inoperative without thoseelements.

All publications, patents and patent applications mentioned in thisspecification are herein incorporated in their entirety by referenceinto the specification, to the same extent as if each individualpublication, patent or patent application was specifically andindividually indicated to be incorporated herein by reference. Inaddition, citation or identification of any reference in thisapplication shall not be construed as an admission that such referenceis available as prior art to the present invention. To the extent thatsection headings are used, they should not be construed as necessarilylimiting.

1. An ostomy appliance comprising an adaptor having a distal end adaptedto be coupled to an ostomy wafer and a proximal end adapted to becoupled to a cap, said distal end having an opening in fluidcommunication with an opening in said proximal end.
 2. An ostomyappliance according to claim 1 comprising a cap adapted to be removablycoupled to said adaptor.
 3. (canceled)
 4. An ostomy appliance accordingto claim 1, wherein said adaptor includes a sealing mechanism forsealing a wafer/adaptor interface. 5-15. (canceled)
 16. An ostomyappliance according to claim 2, wherein said adaptor includes an openingfor releasing gas flowing from the stoma. 17-20. (canceled)
 21. Anostomy appliance according to claim 1, further comprising a sealingelement adapted to be accommodated within an interior cavity of saidadaptor. 22-23. (canceled)
 24. An ostomy appliance according to claim 21wherein said sealing element includes a compressed foam element. 25-28.(canceled)
 29. An ostomy appliance according to claim 1, wherein saidostomy appliance does not press on the stoma when worn.
 30. An ostomyappliance according to claim 1, wherein the axial length of the closedostomy appliance is 12 mm or less.
 31. (canceled)
 32. An ostomycomponent sealing system for sealing to an ostomy wafer comprising: ahousing adapted to be attached to said wafer; and a sealing mechanism,formed of at least one element, that resists the flow of pressurizedgasses through the housing-wafer interface.
 33. The ostomy componentsealing system of claim 32, wherein the at least one sealing mechanismelement comprises an element integrally formed in the housing whichpresses against a surface of the wafer to form a seal that resists theoutflow of gasses under pressure from the stoma.
 34. The ostomycomponent sealing system of claim 32, wherein the at least one sealingmechanism element comprises an element integrally formed in the waferwhich presses against a surface of the housing to form a seal thatresists the outflow of gasses under pressure from the stoma.
 35. Theostomy component sealing system of claim 32, wherein the at least onesealing mechanism element comprises a separate element contained withina cavity of the wafer which presses against a surface of at least one ofthe housing and the stoma to form a seal that resists the outflow ofgasses under pressure from the stoma.
 36. The ostomy component sealingsystem of claim 32, wherein the housing comprises the housing of anostomy cap.
 37. The ostomy component sealing system of claim 32, whereinthe housing comprises a lumen having a proximal end, and is attached toa collapsed collection bag which closes the proximal end.
 38. The ostomycomponent sealing system of claim 37 wherein the housing is attached toa pouch deployment prevention element which at least partially coversthe collapsed collection bag and the closed proximal end.
 39. The ostomycomponent sealing system of claim 37 wherein the housing comprises acavity sized to hold a filter, and within the cavity there is a filterfor filtering gasses flowing from the stoma.
 40. (canceled)
 41. Theostomy component sealing system according to claim 32, wherein thehousing and the at least one element of the sealing mechanism element donot press on the stoma. 42-46. (canceled)
 47. A method of sealing astoma in a subject's body comprising: attaching an ostomy wafer over thestoma; and fitting onto said ostomy wafer a cap comprising a collapsedpouch, a deployment prevention element and a gas filter, withoutapplying direct force to the stoma.
 48. The ostomy appliance accordingto claim 1 wherein the adaptor and the cap are integrally coupled. 49.The ostomy appliance according to claim 1, wherein the adaptor and thewafer are integrally coupled.